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NANJING SUNNY PHARMATECH CO., LTD

Our product has a very high quality and now we are exporting to customers overseas with very positive feedback. With best price, quality and service from Nanjing Sunny, we are confident to set up a very nice cooperation with customers all over the w

tert-butyl 4-(6-aminopyridin-3-yl)piperazine-1-carboxylate

Cas:571188-59-5

Min.Order:1 Kilogram

Negotiable

Type:Trading Company

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Dayang Chem (Hangzhou) Co.,Ltd.

As a leading manufacturer and supplier of chemicals in China, DayangChem not only supply popular chemicals, but also DayangChem's R&D center offer custom synthesis services. DayangChem can provide different quantities of custom synthesis ch

4-(6-Aminopyridin-3-yl)piperazine-1-carboxylic acid tert-butyl ester

Cas:571188-59-5

Min.Order:1 Kilogram

FOB Price: $3.0

Type:Lab/Research institutions

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Simagchem Corporation

Welcome to Simagchem, your partner in China as a premier supply of bulk specialty chemicals for industry and life science. We introduce experienced quality product and exceptional JIT service with instant market intelligence in China to benefit our

High quality tert-Butyl 4-(6-aminopyridin-3-yl)piperazine-1-carboxylate supplier in China

Cas:571188-59-5

Min.Order:1 Metric Ton

Negotiable

Type:Manufacturers

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Jinan Finer Chemical Co., Ltd

Product description: Product name tert-Butyl 4-(6-aminopyridin-3-yl)piperazine-1-carboxylate CAS number 571188-59-5 Assay ≥99% Appearance White powder Capacity 20mt/year Applica

tert-Butyl 4-(6-aminopyridin-3-yl)piperazine-1-carboxylate

Cas:571188-59-5

Min.Order:10 Gram

FOB Price: $12.0

Type:Lab/Research institutions

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Wuhan Fortuna Chemical Co.,Ltd

tert-butyl 4-(6-aminopyridin-3-yl)piperazine-1-carboxylate CAS 571188-59-5 Company profile Wuhan Fortuna Chemical Co.,Ltd established in 2006, is a big integrative chemical enterprise being engaged in Pharmaceutical & its intermediates, Food

tert-butyl 4-(6-aminopyridin-3-yl)piperazine-1-carboxylate CAS 571188-59-5

Cas:571188-59-5

Min.Order:10 Kilogram

FOB Price: $10.0

Type:Trading Company

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Hebei yanxi chemical co.,LTD.

Hebei yanxi chemical co. LTD. has expanded a compositive entity from initially only as a small manufacturer. The company dedicated to the development, production and marketing of chemicals. After many years of efforts, we have established stable

tert-Butyl 2- (4-(pyridin-2-yl)benzyl)hydrazinecarboxylate

Cas:571188-59-5

Min.Order:1 Metric Ton

FOB Price: $1.0 / 2.0

Type:Manufacturers

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Hangzhou Think Chemical Co. Ltd

tert-Butyl 4-(6-aminopyridin-3-yl)piperazine-1-carboxylate CAS No.:571188-59-5 Name: tert-Butyl 4-(6-aminopyridin-3-yl)piperazine-1-carboxylate Synonyms: 4-(6-Aminopyridin-3-yl)piperazine-1-carboxylic acid tert-but

High purity tert-Butyl 4-(6-aminopyridin-3-yl)piperazine-1-carboxylate CAS No.:571188-59-5

Cas:571188-59-5

Min.Order:1 Kilogram

FOB Price: $2.0

Type:Other

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Ality Chemical Corporation

The above product is Ality Chemical's strong item with best price, good quality and fast supply. Ality Chemical has been focusing on the research and production of this field for over 14 years. At the same time, we are always committed to providi

Enke Pharma-tech Co.,Ltd. (Cangzhou, China )

Cangzhou Enke Pharma Tech Co.,ltd. is located in Cangzhou City, Hebei province ,where is a famous petroleum chemical industry city in China. Enke Pharma a high-tech enterprise ,and we are dedicated to developing and manufacturing new ap

tert-Butyl 4-(6-aminopyridin-3-yl)piperazine-1-carboxylate

Cas:571188-59-5

Min.Order:1 Kilogram

FOB Price: $1.0

Type:Manufacturers

inquiry

Shanghai SE Pharm Co., Ltd

1. made in GMP plant, commerially 2. Normal Stock: 500kgs 3. Audit accepted. Related documents are available to offer and audited by many clients, such as Lupin, MSN, Dr reddy etc 4. Chromatographic Purity (HPLC): not less than 99.0% 5. Chi

1-(tert-Butoxycarbonyl)-4-(6-aminopyridin-3-yl)piperazine(571188-59-5)

Cas:571188-59-5

Min.Order:1 Kilogram

FOB Price: $100.0

Type:Manufacturers

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Shanghai Seasonsgreen Chemical Co.,Ltd

Shanghai Seasonsgreen Chemical is a high-tech research and development, production, sale and custom synthesis set in one high-tech chemical products enterprises. Our sales and marketing division is located in Shanghai, serving international pharmaceu

lower price High quality tert-butyl 4-(6-aminopyridin-3-yl)piperazine-1-carboxylate

Cas:571188-59-5

Min.Order:1 Kilogram

FOB Price: $1.0

Type:Manufacturers

inquiry

ANQING CHICO PHARMACEUTICAL CO.,LTD.

High quality. Factory supply. In stock. Best price.1.Quick response within 24 hours;2.Best quality in your requirement;?3.We pay more attention on delivery time, and usually ship on time;4.Under the premise of safety and effectiveness, we can produce

tert-butyl 4-(6-aminopyridin-3-yl)piperazine-1-carboxylate

Cas:571188-59-5

Min.Order:0

Negotiable

Type:Trading Company

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Chemwill Asia Co., Ltd.

tert-Butyl 4-(6-aminopyridin-3-yl)piperazine-1-carboxylate -- CHemwill

Cas:571188-59-5

Min.Order:1 Metric Ton

FOB Price: $1.0

Type:Manufacturers

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Henan Tianfu Chemical Co., Ltd.

Our company was built in 2009 with an ISO certificate. In the past 5 years, we have grown up as a famous fine chemicals supplier in China and we had established stable business relationships with Samsung,LG,Merck,Thermo Fisher Scientific and so o

TIANFUCHEM OTAVA-BB 1207229

Cas:571188-59-5

Min.Order:1 Kilogram

Negotiable

Type:Lab/Research institutions

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Leader Biochemical Group

About Product Technical Details

China Largest factory Manufacturer Supply Tert-butyl 4-(6-aminopyridin-3-yl)piperazine-1-carboxylate CAS 571188-59-5

Cas:571188-59-5

Min.Order:1 Kilogram

FOB Price: $1.0 / 3.0

Type:Lab/Research institutions

inquiry

LIDE PHARMACEUTICALS LIMITED

LIDE PHARMACEUTICALS LIMITED is a professional chemicals and APIs leading manufacturer in China. Our core business line covers APIs, Intermediates, Herb extract, etc.

OTAVA-BB 1207229

Cas:571188-59-5

Min.Order:1 Kilogram

FOB Price: $0.9 / 1.0

Type:Lab/Research institutions

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Hebei Nengqian Chemical Import and Export Co., LTD

Our Advantage Rich Experience Our products are sold all over Europe,North&South America, Sino-East, Asia and pacific area as well as Africa,we establish long term. Quality service Company cooperates with research institutes. We strictly con

High Purity Otava-Bb 1207229 Powder CAS 571188-59-5 with Safe Delivery

Cas:571188-59-5

Min.Order:1 Kilogram

FOB Price: $1.0 / 10.0

Type:Trading Company

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Zhuozhou Wenxi import and Export Co., Ltd

WITH US,YOUR MONEY IN SAFE,YOUR BUSINESS IN SAFE 1)Quick Response Within 12 hours; 2)Quality Guarantee: All products are strictly tested by our QC, confirmed by QA and approved by third party lab in China, USA, Canada, Germany, UK, Italy, France et

Factory direct supply CAS 571188-59-5 with best quality

Cas:571188-59-5

Min.Order:1 Kilogram

FOB Price: $139.0 / 210.0

Type:Trading Company

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Henan Sinotech Import&Export Corporation

Product name tert-Butyl 4-(6-aminopyridin-3-yl)piperazine-1-carboxylate Cas number 571188-59-5 Molecular formula C14H22N4O2

tert-Butyl 4-(6-aminopyridin-3-yl)piperazine-1-carboxylate CAS: 571188-59-5

Cas:571188-59-5

Min.Order:5 Metric Ton

FOB Price: $1.0 / 2.0

Type:Other

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Hubei Langyou International Trading Co., Ltd

1. Guaranteed purity; 2. Large quantity in stock; 3. Largest manufacturer; 4. Best service after shipment with email; 5. High quality & competitive price; Appearance:White Crystalline Powder Storage:Store in sealed conta

high quality 571188-59-5 C14H22N4O2 with best price

Cas:571188-59-5

Min.Order:10 Gram

Negotiable

Type:Other

inquiry

Shanghai Upbio Tech Co.,Ltd

1.No Less 8 years exporting experience. Clients can 100% received goods 2.Lower Price with higher quality 3,Free sample 4,We are sincerely responsible for the "product quality" and "After Service" Upbio is Specialized

1-Piperazinecarboxylic acid, 4-(6-amino-3-pyridinyl)-, 1,1-dimethylethyl ester 571188-59-5

Cas:571188-59-5

Min.Order:1 Kilogram

Negotiable

Type:Lab/Research institutions

inquiry

Qingdao Beluga Import and Export Co., LTD

tert-butyl 4-(6-aminopyridin-3-yl)piperazine-1-carboxylate CAS:571188-59-5 Qingdao Belugas Import and Export Co., Ltd. is a scientific and technological company integrating research and development, production and trade of chemical intermediates, sp

tert-butyl 4-(6-aminopyridin-3-yl)piperazine-1-carboxylate CAS:571188-59-5

Cas:571188-59-5

Min.Order:1 Gram

Negotiable

Type:Lab/Research institutions

inquiry

Wuhan Wonda Pharm Limited

1.high quality: quality is life. quality is the most important element for all goods. we have a lab doing research in wuhan china. hplc and nmr is available if needed. 2.reasonable price: we provide high quality products wi

Palbociclib Intermediate OTAVA-BB 1207229

Cas:571188-59-5

Min.Order:10 Gram

Negotiable

Type:Lab/Research institutions

inquiry

Lonwin Chemical Group Limited

tert-Butyl 4-(6-aminopyridin-3-yl)piperazine-1-carboxylate CAS: 571188-59-5 Specification Product name tert-Butyl 4-(6-aminopyridin-3-yl)piperazine-1-carboxylate CAS number 571188-59-5 Assay ≥99% Ap

Factory supply tert-Butyl 4-(6-aminopyridin-3-yl)piperazine-1-carboxylate

Cas:571188-59-5

Min.Order:1 Kilogram

Negotiable

Type:Other

inquiry

Henan Wentao Chemical Product Co., Ltd.

Henan Wentao Chemical Product Co.,Ltd is Located in Zhengzhou High-tech Development Zone with import and export license, We passed ISO 9001:2008 as well, Henan Wentao has developed more than 1000 compounds, which are widely used in the fields of prod

1-Piperazinecarboxylic acid, 4-(6-amino-3-pyridinyl)-, 1,1-dimethylethyl ester

Cas:571188-59-5

Min.Order:0

Negotiable

Type:Lab/Research institutions

inquiry

Wuhan Han Sheng New Material Technology Co.,Ltd

Our Advantage: high quality with competitive price High quality standard: BP/USP/EP Enterprise standard All purity customized Fast and safe delivery We have reliable forwarder who can help us deliver our goods more fast and safe. We

Tert-butyl 4-(6-amino-3-pyridyl)piperazine-1-carboxylate

Cas:571188-59-5

Min.Order:10 Kilogram

Negotiable

Type:Trading Company

inquiry

Triumph International Development Limilted

Appearance:white or light yellow crystalline powder Storage:Store in a cool,dry place and keep away from direct strong light Package:As customer request Application:Used for research and industrial manufacture. Transportation:By

1-Boc-4-(6-Aminopyridin-3-Yl)Piperazine

Cas:571188-59-5

Min.Order:100 Gram

Negotiable

Type:Lab/Research institutions

inquiry

Nanjing Fred Technology Co.,Ltd.

4-(6-Aminopyridin-3-yl)piperazine-1-carboxylic acid tert-butyl ester is one of the most competitive products in our company, we can supply it with good quality and best price. Appearance:White to yellow solid Storage:Room temperature, Keep in Dark Pl

4-(6-Aminopyridin-3-yl)piperazine-1-carboxylic acid tert-butyl ester

Cas:571188-59-5

Min.Order:1 Kilogram

Negotiable

Type:Lab/Research institutions

inquiry

Taizhou Crene Biotechnology co.ltd

Our company provides one-stop services of research - development - production for a variety of special prouducts. Not only do we make effective use of our strong technological strength, but also establish of cooperative relations with several well-

Palbociclib intermediate 571188-59-5

Cas:571188-59-5

Min.Order:100 Gram

Negotiable

Type:Lab/Research institutions

inquiry

Hubei Jiutian Bio-medical Technology Co., Ltd

1,we produce and sell good chemicals around the world. 2,our success rate is about 95%. this means, if customer order is accepted, the probability that the customer will obtain the ordered substances, is 95%. 3,our staff consists of highly qualifie

CAS 571188-59-5 tert-butyl 4-(6-aminopyridin-3-yl)piperazine-1-carboxylate

Cas:571188-59-5

Min.Order:1 Kilogram

Negotiable

Type:Lab/Research institutions

inquiry

Synthetic route

4-(6-nitropyridin-3-yl)-piperazine-1-carboxylic acid tert-butyl ester
571189-16-7

4-(6-nitropyridin-3-yl)-piperazine-1-carboxylic acid tert-butyl ester

tert-butyl 4-(6-aminopyridin-3-yl)piperazine-1-carboxylate
571188-59-5

tert-butyl 4-(6-aminopyridin-3-yl)piperazine-1-carboxylate

Conditions
ConditionsYield
With hydrogen; palladium on activated charcoal In ethanol; water for 2h;100%
With palladium on activated charcoal; hydrogen In ethanol for 3h;100%
With palladium 10% on activated carbon; hydrogen In methanol at 25℃; under 2250.23 Torr; for 4h; Autoclave;99.1%
1-(5-nitro-2Z,4Z-pentadienenitrile-4-yl)-4-tert-butoxycarbonylpiperazine

1-(5-nitro-2Z,4Z-pentadienenitrile-4-yl)-4-tert-butoxycarbonylpiperazine

tert-butyl 4-(6-aminopyridin-3-yl)piperazine-1-carboxylate
571188-59-5

tert-butyl 4-(6-aminopyridin-3-yl)piperazine-1-carboxylate

Conditions
ConditionsYield
With 5%-palladium/activated carbon; hydrogen; ammonium chloride In methanol at 40 - 45℃; under 1500.15 - 2250.23 Torr; Temperature; Reagent/catalyst; Pressure; Solvent; Autoclave;95.3%
2-aminopyridine
504-29-0

2-aminopyridine

1-t-Butoxycarbonylpiperazine
57260-71-6

1-t-Butoxycarbonylpiperazine

tert-butyl 4-(6-aminopyridin-3-yl)piperazine-1-carboxylate
571188-59-5

tert-butyl 4-(6-aminopyridin-3-yl)piperazine-1-carboxylate

Conditions
ConditionsYield
With 2,2,6,6-Tetramethyl-1-piperidinyloxy free radical; oxygen In 1,2-dichloro-ethane for 10h; Reagent/catalyst; Irradiation;95%
di-tert-butyl dicarbonate
24424-99-5

di-tert-butyl dicarbonate

5-(piperazin-1-yl)pyridin-2-amine

5-(piperazin-1-yl)pyridin-2-amine

tert-butyl 4-(6-aminopyridin-3-yl)piperazine-1-carboxylate
571188-59-5

tert-butyl 4-(6-aminopyridin-3-yl)piperazine-1-carboxylate

Conditions
ConditionsYield
In methanol; water at 20℃; Solvent; Inert atmosphere;94%
2-amino-5-iodopyridine
20511-12-0

2-amino-5-iodopyridine

1-t-Butoxycarbonylpiperazine
57260-71-6

1-t-Butoxycarbonylpiperazine

tert-butyl 4-(6-aminopyridin-3-yl)piperazine-1-carboxylate
571188-59-5

tert-butyl 4-(6-aminopyridin-3-yl)piperazine-1-carboxylate

Conditions
ConditionsYield
With potassium phosphate; copper(l) iodide; ethylene glycol In isopropyl alcohol at 110℃; for 10h; Ullmann Condensation; Sealed tube;85%
1-(6-nitropyridin-3-yl)piperazine
775288-71-6

1-(6-nitropyridin-3-yl)piperazine

tert-butyl 4-(6-aminopyridin-3-yl)piperazine-1-carboxylate
571188-59-5

tert-butyl 4-(6-aminopyridin-3-yl)piperazine-1-carboxylate

Conditions
ConditionsYield
Multi-step reaction with 2 steps
1: 190.93 g / aq. NaHCO3 / tetrahydrofuran / 3 h
2: 83 percent / H2 / Raney Nickel / methanol / 5 h / 2585.74 Torr
View Scheme
Multi-step reaction with 2 steps
1: triethylamine / tetrahydrofuran / 50 °C
2: 10% palladium on activated carbon; hydrogen / methanol
View Scheme
Multi-step reaction with 2 steps
1: sodium hydrogencarbonate / water; tetrahydrofuran / 3 h / 20 °C
2: hydrogen / water; methanol / 5 h / 2585.81 Torr
View Scheme
Multi-step reaction with 2 steps
1: dmap; triethylamine / dichloromethane / 8 h / 20 °C
2: hydrogen; palladium 10% on activated carbon / methanol / 20 °C
View Scheme
5-bromo2-nitropyridine
39856-50-3

5-bromo2-nitropyridine

tert-butyl 4-(6-aminopyridin-3-yl)piperazine-1-carboxylate
571188-59-5

tert-butyl 4-(6-aminopyridin-3-yl)piperazine-1-carboxylate

Conditions
ConditionsYield
Multi-step reaction with 3 steps
1: tetra-n-butylammonium iodide; K2CO3 / dimethylsulfoxide / 80 - 100 °C
2: 190.93 g / aq. NaHCO3 / tetrahydrofuran / 3 h
3: 83 percent / H2 / Raney Nickel / methanol / 5 h / 2585.74 Torr
View Scheme
Multi-step reaction with 3 steps
1: tetra-(n-butyl)ammonium iodide; potassium carbonate / dimethyl sulfoxide / 80 °C
2: triethylamine / tetrahydrofuran / 50 °C
3: 10% palladium on activated carbon; hydrogen / methanol
View Scheme
Multi-step reaction with 2 steps
1: potassium carbonate / dimethyl sulfoxide / 65 °C
2: hydrogen / palladium 10% on activated carbon / ethanol / 16 h / 20 °C / Inert atmosphere
View Scheme
4-(6-nitropyridin-3-yl)-piperazine-1-carboxylic acid tert-butyl ester
571189-16-7

4-(6-nitropyridin-3-yl)-piperazine-1-carboxylic acid tert-butyl ester

aluminum nickel

aluminum nickel

tert-butyl 4-(6-aminopyridin-3-yl)piperazine-1-carboxylate
571188-59-5

tert-butyl 4-(6-aminopyridin-3-yl)piperazine-1-carboxylate

Conditions
ConditionsYield
In methanol; n-heptane; water; hydrogen
1-t-Butoxycarbonylpiperazine
57260-71-6

1-t-Butoxycarbonylpiperazine

tert-butyl 4-(6-aminopyridin-3-yl)piperazine-1-carboxylate
571188-59-5

tert-butyl 4-(6-aminopyridin-3-yl)piperazine-1-carboxylate

Conditions
ConditionsYield
Multi-step reaction with 2 steps
1: potassium carbonate / dimethyl sulfoxide / 65 °C
2: hydrogen / palladium 10% on activated carbon / ethanol / 16 h / 20 °C / Inert atmosphere
View Scheme
Multi-step reaction with 2 steps
1: potassium carbonate / dimethyl sulfoxide / 65 °C
2: palladium 10% on activated carbon; hydrogen / ethanol / 16 h / 20 °C
View Scheme
Multi-step reaction with 2 steps
1: 1-methyl-pyrrolidin-2-one / 3 h / 120 °C
2: hydrogen; palladium 10% on activated carbon / ethanol / 2 h
View Scheme
di-tert-butyl dicarbonate
24424-99-5

di-tert-butyl dicarbonate

tert-butyl 4-(6-aminopyridin-3-yl)piperazine-1-carboxylate
571188-59-5

tert-butyl 4-(6-aminopyridin-3-yl)piperazine-1-carboxylate

Conditions
ConditionsYield
Multi-step reaction with 2 steps
1: potassium carbonate / water; tetrahydrofuran / 1.5 h / 5 - 28 °C / Inert atmosphere
2: hydrogen / palladium 10% on activated carbon / water; methanol / 0.25 h / 19 - 54 °C / 1551.49 - 2327.23 Torr / Inert atmosphere
View Scheme
Multi-step reaction with 2 steps
1: N,N-dimethyl-formamide
2: hydrogen; palladium 10% on activated carbon / methanol
View Scheme
Multi-step reaction with 2 steps
1.1: N,N-dimethyl-formamide; isopropyl alcohol / 20 - 60 °C
1.2: 20 °C
2.1: zinc; acetic acid / water / 2 h / 10 - 20 °C
View Scheme
2-amino-5-fluoropyridine
21717-96-4

2-amino-5-fluoropyridine

tert-butyl 4-(6-aminopyridin-3-yl)piperazine-1-carboxylate
571188-59-5

tert-butyl 4-(6-aminopyridin-3-yl)piperazine-1-carboxylate

Conditions
ConditionsYield
Multi-step reaction with 3 steps
1: sulfuric acid; dihydrogen peroxide / water / 16 h / 0 - 20 °C
2: triethylamine / toluene / 16 h / 100 °C
3: hydrogen / Raney-Nickel / methanol / 4 h / 20 °C
View Scheme
Multi-step reaction with 2 steps
1: copper(l) iodide; potassium carbonate; ethyl 2-oxocyclohexane carboxylate / N,N-dimethyl-formamide / 130 °C / Inert atmosphere
2: methanol; water / 20 °C / Inert atmosphere
View Scheme
5-fluoro-2-nitro-pyridine
779345-37-8

5-fluoro-2-nitro-pyridine

tert-butyl 4-(6-aminopyridin-3-yl)piperazine-1-carboxylate
571188-59-5

tert-butyl 4-(6-aminopyridin-3-yl)piperazine-1-carboxylate

Conditions
ConditionsYield
Multi-step reaction with 2 steps
1: triethylamine / toluene / 16 h / 100 °C
2: hydrogen / Raney-Nickel / methanol / 4 h / 20 °C
View Scheme
Multi-step reaction with 2 steps
1: N-ethyl-N,N-diisopropylamine / ethanol / 36 h / 60 °C
2: acetic acid; palladium on activated charcoal; hydrogen / methanol / 4 h / 25 °C
View Scheme
Multi-step reaction with 2 steps
1.1: potassium carbonate / dimethyl sulfoxide / 0.5 h / 20 °C
1.2: 5 h / 70 °C
2.1: FeO(OH)/C; hydrazine hydrate / ethanol / Reflux
View Scheme
5-chloro-2-nitropyridine
52092-47-4

5-chloro-2-nitropyridine

tert-butyl 4-(6-aminopyridin-3-yl)piperazine-1-carboxylate
571188-59-5

tert-butyl 4-(6-aminopyridin-3-yl)piperazine-1-carboxylate

Conditions
ConditionsYield
Multi-step reaction with 2 steps
1: potassium carbonate / dimethyl sulfoxide / 100 - 110 °C / Microwave irradiation
2: palladium 10% on activated carbon; hydrogen / methanol / 4 h / 20 °C
View Scheme
4-(6-nitropyridin-3-yl)piperazin-1-ium bromide

4-(6-nitropyridin-3-yl)piperazin-1-ium bromide

tert-butyl 4-(6-aminopyridin-3-yl)piperazine-1-carboxylate
571188-59-5

tert-butyl 4-(6-aminopyridin-3-yl)piperazine-1-carboxylate

Conditions
ConditionsYield
Multi-step reaction with 2 steps
1: triethylamine; dmap / dichloromethane / 8 h / 20 °C
2: palladium 10% on activated carbon; hydrogen / methanol / 20 °C
View Scheme
5-bromo-2-pyridylamine
1072-97-5

5-bromo-2-pyridylamine

1-t-Butoxycarbonylpiperazine
57260-71-6

1-t-Butoxycarbonylpiperazine

tert-butyl 4-(6-aminopyridin-3-yl)piperazine-1-carboxylate
571188-59-5

tert-butyl 4-(6-aminopyridin-3-yl)piperazine-1-carboxylate

Conditions
ConditionsYield
With potassium phosphate; copper(l) iodide; ethylene glycol In isopropyl alcohol at 110℃; for 24h; Ullmann Condensation; Sealed tube;
5-bromo2-nitropyridine
39856-50-3

5-bromo2-nitropyridine

1-t-Butoxycarbonylpiperazine
57260-71-6

1-t-Butoxycarbonylpiperazine

tert-butyl 4-(6-aminopyridin-3-yl)piperazine-1-carboxylate
571188-59-5

tert-butyl 4-(6-aminopyridin-3-yl)piperazine-1-carboxylate

Conditions
ConditionsYield
Multi-step reaction with 2 steps
1: triethylamine; lithium chloride / dimethyl sulfoxide / 12 h / 60 - 65 °C
2: hydrogen / methanol / 4 h / 20 °C
View Scheme
Multi-step reaction with 2 steps
1: N-ethyl-N,N-diisopropylamine / N,N-dimethyl-formamide / 50 °C
2: hydrogen; palladium on activated charcoal / methanol / 20 °C
View Scheme
Multi-step reaction with 2 steps
1: N-ethyl-N,N-diisopropylamine / ethanol / 20 h / 25 °C / Inert atmosphere
2: hydrogen; palladium on activated charcoal / ethanol / 3 h / 25 °C
View Scheme
Multi-step reaction with 2 steps
1: triethylamine / dimethyl sulfoxide / 18 h / 60 °C
2: iron; ammonium chloride / ethanol / 6 h / 70 °C
View Scheme
piperazine
110-85-0

piperazine

5-chloro-2-pyridylamine
1072-98-6

5-chloro-2-pyridylamine

di-tert-butyl dicarbonate
24424-99-5

di-tert-butyl dicarbonate

tert-butyl 4-(6-aminopyridin-3-yl)piperazine-1-carboxylate
571188-59-5

tert-butyl 4-(6-aminopyridin-3-yl)piperazine-1-carboxylate

Conditions
ConditionsYield
Stage #1: piperazine; di-tert-butyl dicarbonate In dichloromethane at 0 - 20℃; for 2h;
Stage #2: 5-chloro-2-pyridylamine In water; N,N-dimethyl-formamide at 100℃; for 8h;
Stage #1: piperazine; di-tert-butyl dicarbonate In dichloromethane at 0 - 20℃; for 2h;
Stage #2: 5-chloro-2-pyridylamine In water; N,N-dimethyl-formamide at 100℃; for 8h;
Stage #1: piperazine; di-tert-butyl dicarbonate In dichloromethane at 0 - 20℃; for 2h;
Stage #2: 5-chloro-2-pyridylamine In water; N,N-dimethyl-formamide at 100℃; for 8h;
Stage #1: piperazine; di-tert-butyl dicarbonate In dichloromethane at 0 - 20℃; for 2h;
Stage #2: 5-chloro-2-pyridylamine In water; N,N-dimethyl-formamide at 100℃; for 8h;
5-bromo-2-pyridylamine
1072-97-5

5-bromo-2-pyridylamine

tert-butyl 4-(6-aminopyridin-3-yl)piperazine-1-carboxylate
571188-59-5

tert-butyl 4-(6-aminopyridin-3-yl)piperazine-1-carboxylate

Conditions
ConditionsYield
Multi-step reaction with 3 steps
1: dihydrogen peroxide; sulfuric acid / water / 5 - 15 °C
2: lithium chloride; triethylamine / acetonitrile / 32 h / 70 - 73 °C / Inert atmosphere
3: palladium 10% on activated carbon; hydrogen / methanol / 12 h / 20 °C / 2250.23 Torr
View Scheme
5-fluoro-2-nitro-pyridine
779345-37-8

5-fluoro-2-nitro-pyridine

1-t-Butoxycarbonylpiperazine
57260-71-6

1-t-Butoxycarbonylpiperazine

tert-butyl 4-(6-aminopyridin-3-yl)piperazine-1-carboxylate
571188-59-5

tert-butyl 4-(6-aminopyridin-3-yl)piperazine-1-carboxylate

Conditions
ConditionsYield
Multi-step reaction with 2 steps
1.1: potassium carbonate / tetrahydrofuran / 1 h / 20 °C
1.2: 8 h / 50 °C
2.1: palladium 10% on activated carbon / methanol / 10 h / 20 °C
View Scheme
5-bromo2-nitropyridine
39856-50-3

5-bromo2-nitropyridine

di-tert-butyl dicarbonate
24424-99-5

di-tert-butyl dicarbonate

tert-butyl 4-(6-aminopyridin-3-yl)piperazine-1-carboxylate
571188-59-5

tert-butyl 4-(6-aminopyridin-3-yl)piperazine-1-carboxylate

Conditions
ConditionsYield
Multi-step reaction with 2 steps
1.1: tetra-(n-butyl)ammonium iodide; potassium carbonate / dimethyl sulfoxide / 80 °C
1.2: 3 h / 20 °C
2.1: hydrogen / water; methanol / 2585.81 Torr
View Scheme
C5H5N3O2

C5H5N3O2

tert-butyl 4-(6-aminopyridin-3-yl)piperazine-1-carboxylate
571188-59-5

tert-butyl 4-(6-aminopyridin-3-yl)piperazine-1-carboxylate

Conditions
ConditionsYield
Multi-step reaction with 2 steps
1: N,N-dimethyl-formamide / 5 h / 20 - 85 °C
2: 5%-palladium/activated carbon; ammonium chloride; hydrogen / methanol / 40 - 45 °C / 1500.15 - 2250.23 Torr / Autoclave
View Scheme
2-amino-5-iodopyridine
20511-12-0

2-amino-5-iodopyridine

tert-butyl 4-(6-aminopyridin-3-yl)piperazine-1-carboxylate
571188-59-5

tert-butyl 4-(6-aminopyridin-3-yl)piperazine-1-carboxylate

Conditions
ConditionsYield
Multi-step reaction with 2 steps
1: CVT-2537; sodium carbonate; copper(l) iodide / N,N-dimethyl-formamide / 98 °C / Inert atmosphere
2: methanol; water / 20 °C / Inert atmosphere
View Scheme
5-chloro-2-pyridylamine
1072-98-6

5-chloro-2-pyridylamine

tert-butyl 4-(6-aminopyridin-3-yl)piperazine-1-carboxylate
571188-59-5

tert-butyl 4-(6-aminopyridin-3-yl)piperazine-1-carboxylate

Conditions
ConditionsYield
Multi-step reaction with 2 steps
1: copper(l) iodide; rac-Pro-OH; potassium carbonate / butan-1-ol / 120 °C / Inert atmosphere
2: methanol; water / 20 °C / Inert atmosphere
View Scheme
tert-butyl 4-(6-aminopyridin-3-yl)piperazine-1-carboxylate
571188-59-5

tert-butyl 4-(6-aminopyridin-3-yl)piperazine-1-carboxylate

2-chloroethanal
107-20-0

2-chloroethanal

tert-butyl 4-(imidazo[1,2-a]pyridin-6-yl)piperazine-1-carboxylate
684223-68-5

tert-butyl 4-(imidazo[1,2-a]pyridin-6-yl)piperazine-1-carboxylate

Conditions
ConditionsYield
In ethanol; water for 15h; Heating;100%
tert-butyl 4-(6-aminopyridin-3-yl)piperazine-1-carboxylate
571188-59-5

tert-butyl 4-(6-aminopyridin-3-yl)piperazine-1-carboxylate

C15H17ClN2OS

C15H17ClN2OS

tert-butyl 4-(6-((3-cyclopentyl-2-(dimethylcarbamoyl)thieno[2,3-c]pyridin-5-yl)amino)pyridin-3-yl)piperazine-1-carboxylate

tert-butyl 4-(6-((3-cyclopentyl-2-(dimethylcarbamoyl)thieno[2,3-c]pyridin-5-yl)amino)pyridin-3-yl)piperazine-1-carboxylate

Conditions
ConditionsYield
With tris-(dibenzylideneacetone)dipalladium(0); caesium carbonate; 4,5-bis(diphenylphos4,5-bis(diphenylphosphino)-9,9-dimethylxanthenephino)-9,9-dimethylxanthene In 1,4-dioxane for 12h; Inert atmosphere; Reflux;100%
tert-butyl 4-(6-aminopyridin-3-yl)piperazine-1-carboxylate
571188-59-5

tert-butyl 4-(6-aminopyridin-3-yl)piperazine-1-carboxylate

C26H35ClN4O3Si

C26H35ClN4O3Si

C40H56N8O5Si

C40H56N8O5Si

Conditions
ConditionsYield
With palladium diacetate; caesium carbonate; 2,2'-bis-(diphenylphosphino)-1,1'-binaphthyl In 1,4-dioxane at 100℃; for 1.5h;100%
tert-butyl 4-(6-aminopyridin-3-yl)piperazine-1-carboxylate
571188-59-5

tert-butyl 4-(6-aminopyridin-3-yl)piperazine-1-carboxylate

2-chloro-5-methyl-6-bromo-8-cyclopentylpyridine[2,3-d]pyrimidin-8-hydro-7-one

2-chloro-5-methyl-6-bromo-8-cyclopentylpyridine[2,3-d]pyrimidin-8-hydro-7-one

tert‑butyl 4‑(6‑((6‑bromo‑8‑cyclopentyl‑5‑methyl‑7‑oxo‑7,8‑dihydropyrido[2,3‑d]pyrimidin‑2‑yl)amino)pyridin‑3‑yl)piperazine‑1‑carboxylate
571188-82-4

tert‑butyl 4‑(6‑((6‑bromo‑8‑cyclopentyl‑5‑methyl‑7‑oxo‑7,8‑dihydropyrido[2,3‑d]pyrimidin‑2‑yl)amino)pyridin‑3‑yl)piperazine‑1‑carboxylate

Conditions
ConditionsYield
Stage #1: tert-butyl 4-(6-aminopyridin-3-yl)piperazine-1-carboxylate With isopropyl chloride In tetrahydrofuran at 20℃; for 1h; Inert atmosphere; Large scale;
Stage #2: 2-chloro-5-methyl-6-bromo-8-cyclopentylpyridine[2,3-d]pyrimidin-8-hydro-7-one With isopropylmagnesium chloride In tetrahydrofuran at 70℃; Temperature; Large scale;
99.9%
With isopropylmagnesium chloride In tetrahydrofuran at 20 - 60℃; Inert atmosphere;93%
With lithium hexamethyldisilazane In tetrahydrofuran; N,N-dimethyl-formamide at 0 - 25℃;92%
tert-butyl 4-(6-aminopyridin-3-yl)piperazine-1-carboxylate
571188-59-5

tert-butyl 4-(6-aminopyridin-3-yl)piperazine-1-carboxylate

5-piperazin-1-ylpyridin-2-ylamine dihydrochloride

5-piperazin-1-ylpyridin-2-ylamine dihydrochloride

Conditions
ConditionsYield
With hydrogenchloride In 1,4-dioxane; dichloromethane at 20℃; for 16h;99%
tert-butyl 4-(6-aminopyridin-3-yl)piperazine-1-carboxylate
571188-59-5

tert-butyl 4-(6-aminopyridin-3-yl)piperazine-1-carboxylate

1-(2-chloro-8-cyclopentyl-5-methyl-7-oxo-1,3,8-triaza-8H-naphth-6-yl)-1-ethanone

1-(2-chloro-8-cyclopentyl-5-methyl-7-oxo-1,3,8-triaza-8H-naphth-6-yl)-1-ethanone

4-[6-(6-acetyl-8-cyclopentyl-5-methyl-7-oxo-7,8-dihydropyrido[2,3-d]pyrimidin-2-ylamino)pyridine-3-yl]piperazine-1-carboxylic acid tert-butyl ester

4-[6-(6-acetyl-8-cyclopentyl-5-methyl-7-oxo-7,8-dihydropyrido[2,3-d]pyrimidin-2-ylamino)pyridine-3-yl]piperazine-1-carboxylic acid tert-butyl ester

Conditions
ConditionsYield
Stage #1: tert-butyl 4-(6-aminopyridin-3-yl)piperazine-1-carboxylate With lithium hexamethyldisilazane In tetrahydrofuran at 10 - 20℃; for 1h; Inert atmosphere;
Stage #2: 1-(2-chloro-8-cyclopentyl-5-methyl-7-oxo-1,3,8-triaza-8H-naphth-6-yl)-1-ethanone In tetrahydrofuran at 20℃; for 15h; Inert atmosphere;
93.7%
With lithium hexamethyldisilazane In N,N-dimethyl-formamide at 0 - 25℃;79%
With potassium carbonate In N,N-dimethyl-formamide at 80 - 85℃; for 4h;70%
tert-butyl 4-(6-aminopyridin-3-yl)piperazine-1-carboxylate
571188-59-5

tert-butyl 4-(6-aminopyridin-3-yl)piperazine-1-carboxylate

2-chloro-7-cyclopentyl-7H-pyrrolo[2,3-d]pyrimidine-6-carboxylic acid dimethylamide
1211443-61-6

2-chloro-7-cyclopentyl-7H-pyrrolo[2,3-d]pyrimidine-6-carboxylic acid dimethylamide

N,N‐dimethyl‐7‐cyclopentyl‐2‐{[5‐(4-tert-butoxycarbonylpiperazin‐1‐yl)pyridin‐2‐yl]amino}‐7H‐pyrrolo[2,3‐d]pyrimidine‐6‐carboxamide
1374639-78-7

N,N‐dimethyl‐7‐cyclopentyl‐2‐{[5‐(4-tert-butoxycarbonylpiperazin‐1‐yl)pyridin‐2‐yl]amino}‐7H‐pyrrolo[2,3‐d]pyrimidine‐6‐carboxamide

Conditions
ConditionsYield
With palladium diacetate; caesium carbonate; 2,2'-bis-(diphenylphosphino)-1,1'-binaphthyl at 90 - 100℃; for 3h; Inert atmosphere;92.2%
Stage #1: 2-chloro-7-cyclopentyl-7H-pyrrolo[2,3-d]pyrimidine-6-carboxylic acid dimethylamide With potassium carbonate In dichloromethane at 60℃; for 0.5h;
Stage #2: tert-butyl 4-(6-aminopyridin-3-yl)piperazine-1-carboxylate In dichloromethane at 60℃; for 1h; Reagent/catalyst; Temperature;
86%
Stage #1: tert-butyl 4-(6-aminopyridin-3-yl)piperazine-1-carboxylate With lithium hexamethyldisilazane In tetrahydrofuran; toluene at -5 - 35℃; Inert atmosphere;
Stage #2: 2-chloro-7-cyclopentyl-7H-pyrrolo[2,3-d]pyrimidine-6-carboxylic acid dimethylamide In tetrahydrofuran; toluene at -5 - 35℃;
86.6%
tert-butyl 4-(6-aminopyridin-3-yl)piperazine-1-carboxylate
571188-59-5

tert-butyl 4-(6-aminopyridin-3-yl)piperazine-1-carboxylate

C17H20ClN3O3

C17H20ClN3O3

C31H41N7O5

C31H41N7O5

Conditions
ConditionsYield
Stage #1: tert-butyl 4-(6-aminopyridin-3-yl)piperazine-1-carboxylate With lithium hexamethyldisilazane In tetrahydrofuran; toluene at 20℃; for 0.5h; Inert atmosphere;
Stage #2: C17H20ClN3O3 In tetrahydrofuran; toluene at 20℃; for 1h; Inert atmosphere;
92%
tert-butyl 4-(6-aminopyridin-3-yl)piperazine-1-carboxylate
571188-59-5

tert-butyl 4-(6-aminopyridin-3-yl)piperazine-1-carboxylate

N-formylbenzotriazole
72773-04-7

N-formylbenzotriazole

tert-butyl 4-(6-formamidopyridin-3-yl)piperazine-1-carboxylate

tert-butyl 4-(6-formamidopyridin-3-yl)piperazine-1-carboxylate

Conditions
ConditionsYield
In tetrahydrofuran Heating / reflux;91.2%
tert-butyl 4-(6-aminopyridin-3-yl)piperazine-1-carboxylate
571188-59-5

tert-butyl 4-(6-aminopyridin-3-yl)piperazine-1-carboxylate

7-chloro-1-cyclopentyl-3-(1-ethoxyvinyl)-4,8-dimethyl-1,6-naphthyridin-2(1H)-one

7-chloro-1-cyclopentyl-3-(1-ethoxyvinyl)-4,8-dimethyl-1,6-naphthyridin-2(1H)-one

4-(6-((1-cyclopentyl-3-(1-ethoxyvinyl)-4,8-dimethyl-2-oxo-1,2-dihydro-1,6-naphthyridin-7-yl)amino)pyridin-3-yl)piperazine-1-carboxylic acid tert-butyl ester

4-(6-((1-cyclopentyl-3-(1-ethoxyvinyl)-4,8-dimethyl-2-oxo-1,2-dihydro-1,6-naphthyridin-7-yl)amino)pyridin-3-yl)piperazine-1-carboxylic acid tert-butyl ester

Conditions
ConditionsYield
With tris-(dibenzylideneacetone)dipalladium(0); caesium carbonate; 4,5-bis(diphenylphos4,5-bis(diphenylphosphino)-9,9-dimethylxanthenephino)-9,9-dimethylxanthene In toluene Inert atmosphere; Reflux;90.8%
tert-butyl 4-(6-aminopyridin-3-yl)piperazine-1-carboxylate
571188-59-5

tert-butyl 4-(6-aminopyridin-3-yl)piperazine-1-carboxylate

mercaptoacetic acid
68-11-1

mercaptoacetic acid

tert-butyl 4-(hydroxymethyl)piperidin-1-carboxylate
123855-51-6

tert-butyl 4-(hydroxymethyl)piperidin-1-carboxylate

tert-butyl 4-(6-(2-(1-(tert-butoxycarbonyl)piperidin-4-yl)-4-oxothiazolidin-3-yl)pyridin-3-yl)piperazine-1-carboxylate
1402049-32-4

tert-butyl 4-(6-(2-(1-(tert-butoxycarbonyl)piperidin-4-yl)-4-oxothiazolidin-3-yl)pyridin-3-yl)piperazine-1-carboxylate

Conditions
ConditionsYield
Stage #1: tert-butyl 4-(hydroxymethyl)piperidin-1-carboxylate With 2,4,6-tripropyl-1,3,5,2,4,6-trioxatriphosphinane-2,4,6-trioxide In dimethyl sulfoxide; ethyl acetate at 0 - 25℃; Inert atmosphere;
Stage #2: tert-butyl 4-(6-aminopyridin-3-yl)piperazine-1-carboxylate; mercaptoacetic acid In dimethyl sulfoxide; ethyl acetate at 25℃; Inert atmosphere;
90%
With 2,4,6-tripropyl-1,3,5,2,4,6-trioxatriphosphinane-2,4,6-trioxide In dimethyl sulfoxide; ethyl acetate at 0 - 20℃;
tert-butyl 4-(6-aminopyridin-3-yl)piperazine-1-carboxylate
571188-59-5

tert-butyl 4-(6-aminopyridin-3-yl)piperazine-1-carboxylate

tert-butyl 7-benzyl-2-(methylsulfonyl)-7H-pyrrolo[2,3-d]pyrimidine-6-carboxylate

tert-butyl 7-benzyl-2-(methylsulfonyl)-7H-pyrrolo[2,3-d]pyrimidine-6-carboxylate

tert-butyl 7-benzyl-2-((5-(4-(tert-butoxycarbonyl)piperazin-1-yl)pyridin-2-yl)amino)-7H-pyrrolo[2,3-d]pyrimidine-6-carboxylate

tert-butyl 7-benzyl-2-((5-(4-(tert-butoxycarbonyl)piperazin-1-yl)pyridin-2-yl)amino)-7H-pyrrolo[2,3-d]pyrimidine-6-carboxylate

Conditions
ConditionsYield
Stage #1: tert-butyl 4-(6-aminopyridin-3-yl)piperazine-1-carboxylate With sodium hexamethyldisilazane In tetrahydrofuran at -78℃; for 0.5h; Inert atmosphere;
Stage #2: tert-butyl 7-benzyl-2-(methylsulfonyl)-7H-pyrrolo[2,3-d]pyrimidine-6-carboxylate In tetrahydrofuran at -70℃; for 0.5h; Inert atmosphere;
89.1%
tert-butyl 4-(6-aminopyridin-3-yl)piperazine-1-carboxylate
571188-59-5

tert-butyl 4-(6-aminopyridin-3-yl)piperazine-1-carboxylate

2-methoxy-4-(hydroxymethyl)-3-methoxybenzoate
79236-96-7

2-methoxy-4-(hydroxymethyl)-3-methoxybenzoate

mercaptoacetic acid
68-11-1

mercaptoacetic acid

tert-butyl 4-(6-(2-(2-methoxy-4-(methoxycarbonyl)phenyl)-4-oxothiazolidin-3-yl)pyridin-3-yl)piperazine-1-carboxylate
1402049-25-5

tert-butyl 4-(6-(2-(2-methoxy-4-(methoxycarbonyl)phenyl)-4-oxothiazolidin-3-yl)pyridin-3-yl)piperazine-1-carboxylate

Conditions
ConditionsYield
Stage #1: 2-methoxy-4-(hydroxymethyl)-3-methoxybenzoate With 2,4,6-tripropyl-1,3,5,2,4,6-trioxatriphosphinane-2,4,6-trioxide In dimethyl sulfoxide; ethyl acetate at 0 - 25℃; Inert atmosphere;
Stage #2: tert-butyl 4-(6-aminopyridin-3-yl)piperazine-1-carboxylate; mercaptoacetic acid In dimethyl sulfoxide; ethyl acetate at 25℃; Inert atmosphere;
89%
tert-butyl 4-(6-aminopyridin-3-yl)piperazine-1-carboxylate
571188-59-5

tert-butyl 4-(6-aminopyridin-3-yl)piperazine-1-carboxylate

5-(2-chloro-5-fluoropyrimidin-4-yl)-2-methyl-3-isopropenyl-2H-indazole

5-(2-chloro-5-fluoropyrimidin-4-yl)-2-methyl-3-isopropenyl-2H-indazole

tert-butyl 4-[6-({5-fluoro-4-[2-methyl-3-(prop-1-en-2-yl)-2H-indazol-5-yl]pyrimidin-2-yl}amino)pyridin-3-yl]piperazine-1-carboxylate

tert-butyl 4-[6-({5-fluoro-4-[2-methyl-3-(prop-1-en-2-yl)-2H-indazol-5-yl]pyrimidin-2-yl}amino)pyridin-3-yl]piperazine-1-carboxylate

Conditions
ConditionsYield
With tris-(dibenzylideneacetone)dipalladium(0); caesium carbonate; 4,5-bis(diphenylphos4,5-bis(diphenylphosphino)-9,9-dimethylxanthenephino)-9,9-dimethylxanthene In 1,4-dioxane at 110℃; for 16h; Inert atmosphere;88.94%
With tris-(dibenzylideneacetone)dipalladium(0); caesium carbonate; 4,5-bis(diphenylphos4,5-bis(diphenylphosphino)-9,9-dimethylxanthenephino)-9,9-dimethylxanthene In 1,4-dioxane at 110℃; for 16h; Inert atmosphere;88.94%
tert-butyl 4-(6-aminopyridin-3-yl)piperazine-1-carboxylate
571188-59-5

tert-butyl 4-(6-aminopyridin-3-yl)piperazine-1-carboxylate

C16H18ClN3O3

C16H18ClN3O3

8-cyclopentyl-2-[[5-[4-[(1,1-dimethylethoxy)carbonyl]-1-piperazinyl]-2-pyridinyl]amino]-7,8-dihydro-5-methyl-7-oxo-pyrido[2,3-d]pyrimidine-6-carboxylic acid ethyl ester
571189-03-2

8-cyclopentyl-2-[[5-[4-[(1,1-dimethylethoxy)carbonyl]-1-piperazinyl]-2-pyridinyl]amino]-7,8-dihydro-5-methyl-7-oxo-pyrido[2,3-d]pyrimidine-6-carboxylic acid ethyl ester

Conditions
ConditionsYield
With lithium hexamethyldisilazane In toluene at -10 - 0℃; for 0.5h;88.2%
tert-butyl 4-(6-aminopyridin-3-yl)piperazine-1-carboxylate
571188-59-5

tert-butyl 4-(6-aminopyridin-3-yl)piperazine-1-carboxylate

Ethoxycarbonyl isothiocyanate
16182-04-0

Ethoxycarbonyl isothiocyanate

tert-butyl 4-(6-{[(ethoxycarbonyl)carbamothioyl]amino}pyridin-3-yl)piperazine-1-carboxylate

tert-butyl 4-(6-{[(ethoxycarbonyl)carbamothioyl]amino}pyridin-3-yl)piperazine-1-carboxylate

Conditions
ConditionsYield
In 1,4-dioxane at 20℃; for 3h;88%
tert-butyl 4-(6-aminopyridin-3-yl)piperazine-1-carboxylate
571188-59-5

tert-butyl 4-(6-aminopyridin-3-yl)piperazine-1-carboxylate

2-chloro-8-cyclopentyl-6-iodo-5-methylpyrido[2,3-d]pyrimidin-7(8H)-one

2-chloro-8-cyclopentyl-6-iodo-5-methylpyrido[2,3-d]pyrimidin-7(8H)-one

tert-butyl 4-(6-(8-cyclopentyl-6-iodo-5-methyl-7-oxo-7,8-dihydro-pyrido[2,3-d]pyrimidin-2-ylamino)pyridin-3-yl)piperazine-1-carboxylate
571189-22-5

tert-butyl 4-(6-(8-cyclopentyl-6-iodo-5-methyl-7-oxo-7,8-dihydro-pyrido[2,3-d]pyrimidin-2-ylamino)pyridin-3-yl)piperazine-1-carboxylate

Conditions
ConditionsYield
With lithium hexamethyldisilazane In tetrahydrofuran; N,N-dimethyl-formamide at 0 - 25℃;87%
tert-butyl 4-(6-aminopyridin-3-yl)piperazine-1-carboxylate
571188-59-5

tert-butyl 4-(6-aminopyridin-3-yl)piperazine-1-carboxylate

1-(2-chloro-8-cyclopentyl-5-methyl-7-oxo-1,3,8-triaza-8H-naphth-6-yl)-1-ethanone

1-(2-chloro-8-cyclopentyl-5-methyl-7-oxo-1,3,8-triaza-8H-naphth-6-yl)-1-ethanone

PD 0332991
571190-30-2

PD 0332991

Conditions
ConditionsYield
Stage #1: tert-butyl 4-(6-aminopyridin-3-yl)piperazine-1-carboxylate With lithium hexamethyldisilazane In tetrahydrofuran; tert-butyl methyl ether for 0.5h;
Stage #2: 1-(2-chloro-8-cyclopentyl-5-methyl-7-oxo-1,3,8-triaza-8H-naphth-6-yl)-1-ethanone In tetrahydrofuran; tert-butyl methyl ether at 20℃; for 1h; Solvent; Reagent/catalyst;
86.6%
Stage #1: tert-butyl 4-(6-aminopyridin-3-yl)piperazine-1-carboxylate; 1-(2-chloro-8-cyclopentyl-5-methyl-7-oxo-1,3,8-triaza-8H-naphth-6-yl)-1-ethanone With lithium hexamethyldisilazane In toluene at 50 - 55℃; Inert atmosphere;
Stage #2: With hydrogenchloride In dichloromethane; water at 20℃; for 12h; Inert atmosphere;
82.6%
tert-butyl 4-(6-aminopyridin-3-yl)piperazine-1-carboxylate
571188-59-5

tert-butyl 4-(6-aminopyridin-3-yl)piperazine-1-carboxylate

2-methylisothiourea sulphate
14527-26-5, 867-44-7

2-methylisothiourea sulphate

N-(5-(4-N-tert-butoxycarbonyl-1-N-hexahydro-pyrazinyl)2-pyridyl)guanidine sulphate

N-(5-(4-N-tert-butoxycarbonyl-1-N-hexahydro-pyrazinyl)2-pyridyl)guanidine sulphate

Conditions
ConditionsYield
In water at 20 - 25℃; for 6h;86.5%
tert-butyl 4-(6-aminopyridin-3-yl)piperazine-1-carboxylate
571188-59-5

tert-butyl 4-(6-aminopyridin-3-yl)piperazine-1-carboxylate

C14H17FN4O

C14H17FN4O

N,N‐dimethyl‐7‐cyclopentyl‐2‐{[5‐(4-tert-butoxycarbonylpiperazin‐1‐yl)pyridin‐2‐yl]amino}‐7H‐pyrrolo[2,3‐d]pyrimidine‐6‐carboxamide
1374639-78-7

N,N‐dimethyl‐7‐cyclopentyl‐2‐{[5‐(4-tert-butoxycarbonylpiperazin‐1‐yl)pyridin‐2‐yl]amino}‐7H‐pyrrolo[2,3‐d]pyrimidine‐6‐carboxamide

Conditions
ConditionsYield
Stage #1: tert-butyl 4-(6-aminopyridin-3-yl)piperazine-1-carboxylate With lithium hexamethyldisilazane In tetrahydrofuran; toluene at 0 - 10℃; for 1h;
Stage #2: C14H17FN4O In tetrahydrofuran; toluene at 0 - 20℃; for 2.5h;
86%
tert-butyl 4-(6-aminopyridin-3-yl)piperazine-1-carboxylate
571188-59-5

tert-butyl 4-(6-aminopyridin-3-yl)piperazine-1-carboxylate

5-bromo-2-chloro-N-cyclopentylaminopyrimidine-4-amine
733039-20-8

5-bromo-2-chloro-N-cyclopentylaminopyrimidine-4-amine

tert-butyl 4-(6-{[5-bromo-4-(cyclopentylamino)pyrimidin-2-yl]amino}pyridin-3-yl)piperazine-1-carboxylate
733038-80-7

tert-butyl 4-(6-{[5-bromo-4-(cyclopentylamino)pyrimidin-2-yl]amino}pyridin-3-yl)piperazine-1-carboxylate

Conditions
ConditionsYield
Stage #1: 5-bromo-2-chloro-N-cyclopentylaminopyrimidine-4-amine With potassium carbonate In dichloromethane at 60℃; for 0.5h;
Stage #2: tert-butyl 4-(6-aminopyridin-3-yl)piperazine-1-carboxylate In dichloromethane at 20 - 60℃; for 1h;
85%
Stage #1: tert-butyl 4-(6-aminopyridin-3-yl)piperazine-1-carboxylate; 5-bromo-2-chloro-N-cyclopentylaminopyrimidine-4-amine In xylene; butan-1-ol at 100 - 140℃;
Stage #2: With sodium hydroxide In water; ethyl acetate; xylene; butan-1-ol
6-acetyl-8-cyclopentyl-5-methyl-2-(methylsulfinyl)pyrido[2,3-d]pyrimidin-7(8H)-one
850628-86-3

6-acetyl-8-cyclopentyl-5-methyl-2-(methylsulfinyl)pyrido[2,3-d]pyrimidin-7(8H)-one

tert-butyl 4-(6-aminopyridin-3-yl)piperazine-1-carboxylate
571188-59-5

tert-butyl 4-(6-aminopyridin-3-yl)piperazine-1-carboxylate

PD 0332991
571190-30-2

PD 0332991

Conditions
ConditionsYield
Stage #1: 6-acetyl-8-cyclopentyl-5-methyl-2-(methylsulfinyl)pyrido[2,3-d]pyrimidin-7(8H)-one; tert-butyl 4-(6-aminopyridin-3-yl)piperazine-1-carboxylate With lithium hexamethyldisilazane In toluene at 70 - 75℃; Inert atmosphere;
Stage #2: With hydrogenchloride In dichloromethane; water at 20℃; for 12h; Inert atmosphere;
85%
tert-butyl 4-(6-aminopyridin-3-yl)piperazine-1-carboxylate
571188-59-5

tert-butyl 4-(6-aminopyridin-3-yl)piperazine-1-carboxylate

tert-butyl 7-bromo-4-chloro-1-oxoisoindoline-2-carboxylate

tert-butyl 7-bromo-4-chloro-1-oxoisoindoline-2-carboxylate

tert-butyl 4-chloro-7-((5-(4-methylpiperazin-1-yl)pyridin-2-yl)amino)-1-oxoisoindoline-2-carboxylate

tert-butyl 4-chloro-7-((5-(4-methylpiperazin-1-yl)pyridin-2-yl)amino)-1-oxoisoindoline-2-carboxylate

Conditions
ConditionsYield
With tris-(dibenzylideneacetone)dipalladium(0); caesium carbonate; 4,5-bis(diphenylphosphino)-9,9-dimethylxanthene In 1,4-dioxane at 110℃; for 6h; Inert atmosphere;79%
tert-butyl 4-(6-aminopyridin-3-yl)piperazine-1-carboxylate
571188-59-5

tert-butyl 4-(6-aminopyridin-3-yl)piperazine-1-carboxylate

6-chloro-8-bromoimidazo[1,2-a]pyridine
957187-27-8

6-chloro-8-bromoimidazo[1,2-a]pyridine

tert-butyl 4-(6-(6-chloroimidazo[1,2-a]pyridin-8-ylamino)pyridine-3-yl)piperazine-1-carboxylate
1433821-24-9

tert-butyl 4-(6-(6-chloroimidazo[1,2-a]pyridin-8-ylamino)pyridine-3-yl)piperazine-1-carboxylate

Conditions
ConditionsYield
With tris-(dibenzylideneacetone)dipalladium(0); caesium carbonate; 4,5-bis(diphenylphos4,5-bis(diphenylphosphino)-9,9-dimethylxanthenephino)-9,9-dimethylxanthene In 1,4-dioxane at 100℃; for 5h; Inert atmosphere;78%
tert-butyl 4-(6-aminopyridin-3-yl)piperazine-1-carboxylate
571188-59-5

tert-butyl 4-(6-aminopyridin-3-yl)piperazine-1-carboxylate

6-(2-chloro-5-fluoropyrimidin-4-yl)-1-isopropyl-4-methoxy-2-methylimidazo[4,5-c]pyridine

6-(2-chloro-5-fluoropyrimidin-4-yl)-1-isopropyl-4-methoxy-2-methylimidazo[4,5-c]pyridine

tert-butyl 4-[6-[[5-fluoro-4-(1-isopropyl-4-methoxy-2-methylimidazo[4,5-c]pyridin-6-yl)pyrimidin-2-yl]amino]-3-pyridyl]piperazine-1-carboxylate

tert-butyl 4-[6-[[5-fluoro-4-(1-isopropyl-4-methoxy-2-methylimidazo[4,5-c]pyridin-6-yl)pyrimidin-2-yl]amino]-3-pyridyl]piperazine-1-carboxylate

Conditions
ConditionsYield
With tris-(dibenzylideneacetone)dipalladium(0); caesium carbonate; 4,5-bis(diphenylphos4,5-bis(diphenylphosphino)-9,9-dimethylxanthenephino)-9,9-dimethylxanthene In 1,4-dioxane at 110℃; for 16h;76%

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