As a leading and professional manufacturer of APIs and API intermediates in China,Anhui Dexinjia Biopharm Co., Ltd founded in 2006, Except for the R&D center, our company has built a close cooperation relation with Chinese Academy of Sciences,
Cas:57260-71-6
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Type:Manufacturers
inquiryAs 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
Cas:57260-71-6
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inquiryOur Services 1. Certificate Of Analysis (COA) 2. Material Safety Data Sheet (MSDS) 3. Route of synthesis (ROS) 4. Method of Aanlysis (MOA)
Cas:57260-71-6
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inquiryUnique advantages Guaranteed purity High quality & competitive price Quality control Fast feedback Prompt shipment Appearance:White or almost white crystalline powder Storage:Cool dry place Package:1kg/foill bag;25kg/drum
Cas:57260-71-6
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inquiryHebei 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
Cas:57260-71-6
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inquirytert-Butyl 1-piperazinecarboxylate CAS No.:57260-71-6 Name: tert-Butyl 1-piperazinecarboxylate Synonyms: tert-Butyl tetrahydropyrazine-1(2H)-carbox
Cas:57260-71-6
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inquiryT he company has advanced technology, as well as a large number of excellent R & D team, to provide customers from the grams to one hundred kilograms and tons of high-quality products, competitive prices and quality service Appearance:Colorless
Cas:57260-71-6
Min.Order:100 Gram
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Type:Manufacturers
inquiryThe 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
Cas:57260-71-6
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inquiry1. Factory price and high quality must be guaranteed, base on 8 years of production and R&D experience2. Free samples will be provided,ensure specifications and quality are right for customer3. Customers will receive the most professional technical s
Cas:57260-71-6
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inquiryHigh 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.Free samples will be provided. 5.Ensure specifications an
Cas:57260-71-6
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inquiryCangzhou 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
Cas:57260-71-6
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inquiryShanghai 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
Cas:57260-71-6
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inquiry
Cas:57260-71-6
Min.Order:1 Metric Ton
FOB Price: $1.0
Type:Manufacturers
inquirytert-Butyl 1-piperazinecarboxylate Basic information 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
Cas:57260-71-6
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inquiryOur advantages: 1. All inquiries will be replied within 12 hours. 2. Dedication to quality, supply & service. 3. Strictly on selecting raw materials. 4. Reasonable & competitive price, fast lead time. 5. Sample is available for your eva
Cas:57260-71-6
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Type:Trading Company
inquiryWITH 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
Cas:57260-71-6
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FOB Price: $146.0 / 176.0
Type:Trading Company
inquiryProduct name: 1-boc-piperazine CAS : 57260-71-6;146398-94-9;143238-38-4 Appearance: White solid Content: 99% Appearance:White powder Storage:Store in cool and dry place, away from sun light. Package:25kg/drum Application:Organic synthesis Transportat
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
Cas:57260-71-6
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Type:Other
inquiry1.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
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inquiryAdvantage : LIDE PHARMACEUTICALS LTD. is a mid-small manufacturing-type enterprise, engaged in pharmaceutical intermediates of R&D, custom-made and production, and also involving trading chemicals for export. We have established the
Cas:57260-71-6
Min.Order:1 Kilogram
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inquirytert-Butyl 1-piperazinecarboxylate CAS:57260-71-6 Qingdao Belugas Import and Export Co., Ltd. is a scientific and technological company integrating research and development, production and trade of chemical intermediates, specializing in high qualit
Cas:57260-71-6
Min.Order:1 Gram
Negotiable
Type:Lab/Research institutions
inquiryHello, dear friend! I'm Hansen and Allen from China. Welcome to my lookchem mall! The following is a brief introduction of our company's products and services. If you are interested in our products, please contact us by emai
Cas:57260-71-6
Min.Order:1 Kilogram
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Type:Lab/Research institutions
inquiry1.Assay: 98% min 2.CAS No. 57260-71-6 3.Appearance: White or yellowish crystal 1.We have been specializing in special fine chemical for long, with strong R&D strength. 2.ISO9001. 3.We have been cooperating with oversea from Europe, US
Product Name: tert-Butyl 1-piperazinecarboxylate Synonyms: 1-Boc-piperazine ,98%;tert-Butyl 1-piperazinecarboxylate,97%;N-Boc-piperazine hydrochloride;tert-Butyl 1-piperazinecarboxylate,1-N-Boc-Piperazine;1-Boc-piperazine,tert-Butyl piperazine-1
Cas:57260-71-6
Min.Order:100 Gram
Negotiable
Type:Lab/Research institutions
inquiryHenan 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
Cas:57260-71-6
Min.Order:0
Negotiable
Type:Lab/Research institutions
inquiryProduct Detail Minimum Order Qty. 10 Gram
Cas:57260-71-6
Min.Order:10 Gram
Negotiable
Type:Trading Company
inquiryAppearance: white or yellowish crystal 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:Common products
Cas:57260-71-6
Min.Order:100 Metric Ton
Negotiable
Type:Lab/Research institutions
inquiryOur 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 have s
Hangzhou KeyingChem Co., Ltd. exported this product to many countries and regions at best price. If you are looking for the material’s manufacturer or supplier in China, KeyingChem is your best choice. Pls contact with us freely for getting det
Cas:57260-71-6
Min.Order:0 Metric Ton
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Cas:57260-71-6
Min.Order:1 Kilogram
Negotiable
Type:Lab/Research institutions
inquiryC19H22F6N2O4
A
3,5-bis(trifluoromethyl)benzylchloride
B
1-t-Butoxycarbonylpiperazine
Conditions | Yield |
---|---|
With samarium diiodide; water; triethylamine In tetrahydrofuran at 20℃; Inert atmosphere; | A n/a B 99% |
Conditions | Yield |
---|---|
Stage #1: piperazine With 2-chlorotrityl resin; N-ethyl-N,N-diisopropylamine In dichloromethane at 20℃; for 12h; Stage #2: di-tert-butyl dicarbonate With triethylamine In dichloromethane at 20℃; for 4h; Stage #3: With trifluoroacetic acid In dichloromethane | 98% |
With 1-methylimidazolium tetrafluoroborate at 30 - 35℃; for 0.0333333h; | 98% |
With formic acid; acetamidine hydrochloride In methanol; water at 20℃; for 2h; Reagent/catalyst; Solvent; | 98.6% |
1-t-Butoxycarbonylpiperazine
Conditions | Yield |
---|---|
With copper dichloride; ascorbic acid In tetrahydrofuran; water; acetonitrile at 20℃; for 12h; Sealed tube; Sonication; | 95% |
With sodium L-ascorbate; copper dichloride In tetrahydrofuran; water; acetonitrile at 20℃; for 12h; | 95% |
N-(tert-butyloxycarbonyl)bis(2-chloroethyl)amine
1-t-Butoxycarbonylpiperazine
Conditions | Yield |
---|---|
With ammonium hydroxide at 60℃; for 5.5h; Time; | 94.3% |
2-oxo-4-morpholinecarboxylic acidtert-butyl ester
1-t-Butoxycarbonylpiperazine
Conditions | Yield |
---|---|
With ammonia In methanol at 40℃; under 1500.15 Torr; for 2.5h; Solvent; Inert atmosphere; Autoclave; | 91.8% |
1-t-Butoxycarbonylpiperazine
Conditions | Yield |
---|---|
With potassium phosphate; tris(2,2-bipyridine)ruthenium(II) hexafluorophosphate; ascorbic acid In water; acetonitrile at 20℃; for 2h; Sealed tube; Irradiation; Inert atmosphere; | 90% |
1-(tert-butyl) 4-methyl piperazine-1,4-dicarboxylate
1-t-Butoxycarbonylpiperazine
Conditions | Yield |
---|---|
With L-Selectride In tetrahydrofuran at 20℃; for 48h; | 87% |
Conditions | Yield |
---|---|
In water at 55℃; for 24h; | 87% |
piperazine
di-tert-butyl dicarbonate
A
di-tert-butyl piperazine-1,4-dicarboxylate
B
1-t-Butoxycarbonylpiperazine
Conditions | Yield |
---|---|
With sodium hydroxide In water; tert-butyl alcohol at 20℃; for 1.5h; Inert atmosphere; | A n/a B 84% |
With sodium hydroxide In water; tert-butyl alcohol at 25℃; for 1h; | A 18 g B 65% |
In dichloromethane for 0.333333h; | A n/a B 64% |
4-benzyl-piperazine-1-carboxylic acid tert-butyl ester
1-t-Butoxycarbonylpiperazine
Conditions | Yield |
---|---|
With palladium 10% on activated carbon; ammonium formate In methanol at 65℃; for 2h; Reflux; | 84% |
With palladium 10% on activated carbon; hydrogen In methanol at 20℃; | 82% |
palladium In methanol |
1-t-Butoxycarbonylpiperazine
Conditions | Yield |
---|---|
With potassium fluoride on basic alumina for 0.0833333h; Substitution; microwave irradiation; | 76% |
piperazine
bromoacetic acid tert-butyl ester
1-t-Butoxycarbonylpiperazine
Conditions | Yield |
---|---|
With sodium carbonate In acetonitrile for 3h; Reflux; | 76% |
tert-butyl 4-(methylsulfonyl)piperazine-1-carboxylate
1-t-Butoxycarbonylpiperazine
Conditions | Yield |
---|---|
Stage #1: tert-butyl 4-(methylsulfonyl)piperazine-1-carboxylate With lithium diisopropyl amide In tetrahydrofuran; hexane at 0℃; for 0.25h; Inert atmosphere; Stage #2: With oxygen In tetrahydrofuran; hexane at 20℃; for 1h; Stage #3: With water In tetrahydrofuran; hexane | 67% |
piperazine
N-(tert-butyloxycarbonyl) azide
1-t-Butoxycarbonylpiperazine
Conditions | Yield |
---|---|
In ethanol; di-isopropyl ether; water at 15℃; for 4h; | 66.9% |
In dichloromethane for 0.333333h; Yield given; |
tert-butyl 4-((benzyloxy)carbonyl)piperazine-1-carboxylate
1-t-Butoxycarbonylpiperazine
Conditions | Yield |
---|---|
With L-Selectride In tetrahydrofuran at 20℃; for 120h; | 62% |
1-t-Butoxycarbonylpiperazine
Conditions | Yield |
---|---|
With ethylenediamine In tetrahydrofuran at 20℃; Inert atmosphere; | 60% |
1-t-Butoxycarbonylpiperazine
Conditions | Yield |
---|---|
With L-Selectride In tetrahydrofuran at 20℃; for 120h; | 54% |
diphenylmethylpiperazine
1-t-Butoxycarbonylpiperazine
Conditions | Yield |
---|---|
With hydrogenchloride In 1,4-dioxane; palladium on active charcoal; water; ethyl acetate |
1,4-dioxane
N-(tert-butyloxycarbonyl) azide
piperazine hydrochloride
1-t-Butoxycarbonylpiperazine
Conditions | Yield |
---|---|
In water |
3-methylxanthine
1-Bromo-2-butyne
A
4-[7-(2-butynyl)-3-methyl-2,6-dioxo-2,3,6,7-tetrahydro-1H-purin-8-yl]piperazine-1-carboxylic acid tert-butyl ester
B
1-t-Butoxycarbonylpiperazine
Conditions | Yield |
---|---|
With N-chloro-succinimide; potassium carbonate In N,N-dimethyl-formamide |
8-chlorotheophylline
1-Bromo-2-butyne
A
4-[7-(2-Butynyl)-1,3-dimethyl-2,6-dioxo-2,3,6,7-tetrahydro-1H-purin-8-yl]piperazine-1-carboxylic acid tert-butyl ester
B
1-t-Butoxycarbonylpiperazine
Conditions | Yield |
---|---|
With potassium carbonate In N,N-dimethyl-formamide |
piperazine
piperazine dihydrochloride
tert-butyl 1H-imidazole-1-carboxylate
1-t-Butoxycarbonylpiperazine
Conditions | Yield |
---|---|
Stage #1: piperazine; piperazine dihydrochloride In water for 0.0833333h; Stage #2: tert-butyl 1H-imidazole-1-carboxylate With sodium chloride In water for 0.5h; Stage #3: With sodium hydroxide In water chemoselective reaction; |
piperazine
tert-butyl pyridin-2-yl carbonate
1-t-Butoxycarbonylpiperazine
Conditions | Yield |
---|---|
In acetonitrile at 25℃; Kinetics; | |
With hydrogenchloride In water; acetonitrile at 25℃; Kinetics; |
piperazine
t-butyl 4-pyridyl carbonate
1-t-Butoxycarbonylpiperazine
Conditions | Yield |
---|---|
With hydrogenchloride In water; acetonitrile at 25℃; Kinetics; |
tert-butyldicarbonate
1-t-Butoxycarbonylpiperazine
Conditions | Yield |
---|---|
Multi-step reaction with 2 steps 1: dmap / dichloromethane 2: hydrogenchloride / acetonitrile; water / 25 °C View Scheme |
di-tert-butyl dicarbonate
1-t-Butoxycarbonylpiperazine
Conditions | Yield |
---|---|
Multi-step reaction with 2 steps 1: sodium hydrogencarbonate / water; 1,4-dioxane / 25 h / 5 - 20 °C 2: palladium 10% on activated carbon; ammonium formate / methanol / 2 h / 65 °C / Reflux View Scheme | |
Multi-step reaction with 2 steps 1: methanol / 20 °C 2: hydrogen; palladium 10% on activated carbon / methanol / 20 °C View Scheme |
[(1-Ethoxycyclopropyl)oxy]trimethylsilane
1-t-Butoxycarbonylpiperazine
4-cyclopropylpiperazine-1-carboxylic acid tert-butyl ester
Conditions | Yield |
---|---|
Stage #1: [(1-Ethoxycyclopropyl)oxy]trimethylsilane; 1-t-Butoxycarbonylpiperazine With sodium hydroxide; sodium cyanoborohydride; acetic acid In methanol at 60℃; for 5h; Stage #2: With water In methanol for 0.0833333h; Stage #3: With sodium hydroxide In methanol; water for 0.25h; | 100% |
With sodium tris(acetoxy)borohydride; acetic acid In deuteromethanol at 60℃; for 5h; | 100% |
With sodium cyanoborohydride; acetic acid In methanol for 120h; | 71% |
4-fluoro-3-nitro-benzoic acid methyl ester
1-t-Butoxycarbonylpiperazine
Conditions | Yield |
---|---|
With potassium carbonate In tetrahydrofuran at 20℃; for 1h; Cooling with ice; | 100% |
With potassium carbonate In dimethyl sulfoxide at 80℃; for 12h; | |
With potassium carbonate In dimethyl sulfoxide at 120℃; for 24h; |
chloroacetyl chloride
1-t-Butoxycarbonylpiperazine
tert-butyl 4-(2-chloroacetyl)piperazine-1-carboxylate
Conditions | Yield |
---|---|
With triethylamine In tetrahydrofuran at 0 - 20℃; for 21h; | 100% |
With triethylamine In dichloromethane at 0 - 25℃; for 1.5h; | 95% |
With triethylamine In dichloromethane at 0 - 25℃; for 1.5h; | 95% |
1,3,5-trichloro-2,4,6-triazine
1-t-Butoxycarbonylpiperazine
tert-butyl 4-(4,6-dichloro-1,3,5-triazin-2-yl)piperazine-1-carboxylate
Conditions | Yield |
---|---|
With N-ethyl-N,N-diisopropylamine In dichloromethane at 0℃; for 0.5h; | 100% |
With sodium hydrogencarbonate In acetone at 0℃; for 2h; | 96% |
With sodium hydrogencarbonate In acetone Condensation; | 93% |
benzyl chloroformate
1-t-Butoxycarbonylpiperazine
tert-butyl 4-((benzyloxy)carbonyl)piperazine-1-carboxylate
Conditions | Yield |
---|---|
With triethylamine In dichloromethane at 20℃; for 0.5h; | 100% |
With N-ethyl-N,N-diisopropylamine In dichloromethane at 0 - 20℃; | 62.5% |
With triethylamine In dichloromethane Acylation; | |
With pyridine In dichloromethane at 0 - 20℃; Inert atmosphere; |
bis(trichloromethyl) carbonate
1-t-Butoxycarbonylpiperazine
tert-butyl 4-(chlorocarbonyl)piperazine-1-carboxylate
Conditions | Yield |
---|---|
With pyridine In dichloromethane at 0 - 20℃; for 2h; Inert atmosphere; | 100% |
With pyridine In dichloromethane at 0 - 25℃; for 1h; | 89% |
With pyridine In dichloromethane at 0 - 20℃; for 0.5h; Acylation; | 85% |
NBD chloride
1-t-Butoxycarbonylpiperazine
4-(7-nitrobenzo[1,2,5]oxadiazol-4-yl)piperazine-1-carboxylic acid tert butyl ester
Conditions | Yield |
---|---|
With caesium carbonate In acetonitrile at 20℃; for 3h; | 100% |
In chloroform; acetonitrile at 80℃; for 3h; | 100% |
With triethylamine In dichloromethane at 20℃; for 2h; | 98.9% |
1,3-dichloro-6,7-dimethoxyisoquinoline
1-t-Butoxycarbonylpiperazine
4-(3-chloro-6,7-dimethoxy-1-isoquinolyl)-1-piperazinecarboxylic acid tert-butyl ester
Conditions | Yield |
---|---|
With 1-methyl-pyrrolidin-2-one; triethylamine at 70℃; for 2h; | 100% |
4-Acetylbenzenesulfonyl chloride
1-t-Butoxycarbonylpiperazine
4-(4-acetyl-benzenesulfonyl)-piperazine-1-carboxylic acid tert-butyl ester
Conditions | Yield |
---|---|
With triethylamine In dichloromethane | 100% |
2-chloro-4-bromopyridine
1-t-Butoxycarbonylpiperazine
1-N-(tert-butoxycarbonyl)-4-N-(2-chloropyridin-4-yl)piperazine
Conditions | Yield |
---|---|
With sodium t-butanolate; tris-(dibenzylideneacetone)dipalladium(0); 4,5-bis(diphenylphos4,5-bis(diphenylphosphino)-9,9-dimethylxanthenephino)-9,9-dimethylxanthene In toluene at 85℃; for 20h; Inert atmosphere; | 100% |
With 4,5-bis(diphenylphos4,5-bis(diphenylphosphino)-9,9-dimethylxanthenephino)-9,9-dimethylxanthene; sodium t-butanolate; tris(dibenzylideneacetone)dipalladium (0) In toluene at 100℃; for 3h; | 91% |
With sodium t-butanolate; tris-(dibenzylideneacetone)dipalladium(0); 4,5-bis(diphenylphos4,5-bis(diphenylphosphino)-9,9-dimethylxanthenephino)-9,9-dimethylxanthene In toluene at 100℃; for 6 - 14h; Product distribution / selectivity; Heating / reflux; | 70% |
With tris-(dibenzylideneacetone)dipalladium(0); 4,5-bis(diphenylphos4,5-bis(diphenylphosphino)-9,9-dimethylxanthenephino)-9,9-dimethylxanthene; sodium t-butanolate In toluene at 100℃; Buchwald-Hartwig Coupling; Inert atmosphere; | 70% |
With tris-(dibenzylideneacetone)dipalladium(0); 4,5-bis(diphenylphos4,5-bis(diphenylphosphino)-9,9-dimethylxanthenephino)-9,9-dimethylxanthene; sodium t-butanolate In toluene at 90℃; for 4h; Schlenk technique; Sealed tube; Inert atmosphere; | 64% |
1-t-Butoxycarbonylpiperazine
Conditions | Yield |
---|---|
With TEA In N,N-dimethyl-formamide at 23℃; for 24h; | 100% |
cyclobutanone
1-t-Butoxycarbonylpiperazine
4-cyclobutyl-piperazine-1-carboxylic acid tert-butyl ester
Conditions | Yield |
---|---|
With sodium tris(acetoxy)borohydride In 1,2-dichloro-ethane at 20℃; for 16h; | 100% |
With sodium tris(acetoxy)borohydride In 1,2-dichloro-ethane at 20℃; for 16h; | 100% |
Stage #1: cyclobutanone; 1-t-Butoxycarbonylpiperazine In dichloromethane at 20℃; for 0.5h; Stage #2: With sodium tris(acetoxy)borohydride In diethyl ether at 20℃; for 16h; | 97% |
trimethylsilyl ether of 1-methoxycyclopropanol
1-t-Butoxycarbonylpiperazine
4-cyclopropylpiperazine-1-carboxylic acid tert-butyl ester
Conditions | Yield |
---|---|
With sodium cyanoborohydride; acetic acid In tetrahydrofuran; methanol at 63℃; for 16h; | 100% |
2-(4-bromobutyl)isoindoline-1,3-dione
1-t-Butoxycarbonylpiperazine
4-[4-(1,3-dioxo-1,3-dihydroisoindol-2-yl)butyl]piperazine-1-carboxylic acid tert-butyl ester
Conditions | Yield |
---|---|
With potassium carbonate; sodium iodide In acetone for 22h; Reflux; Inert atmosphere; | 100% |
With N-ethyl-N,N-diisopropylamine In acetonitrile for 12h; Heating; | 95% |
With triethylamine In acetonitrile for 16h; Reflux; | 85% |
1-t-Butoxycarbonylpiperazine
3-bromophenyl triisopropylsilyl ether
4-(3-triisopropylsilanyloxy-phenyl)-piperazine-1-carboxylic acid tert-butyl ester
Conditions | Yield |
---|---|
With palladium diacetate; tri-tert-butyl phosphine; sodium t-butanolate In toluene | 100% |
3-Bromothiophene
1-t-Butoxycarbonylpiperazine
Conditions | Yield |
---|---|
Stage #1: 3-Bromothiophene; 1-t-Butoxycarbonylpiperazine With tri-tert-butyl phosphine; palladium diacetate; sodium t-butanolate In xylene at 50℃; Stage #2: With macroporous polymer-supported isocyanate In xylene at 50℃; for 24h; | 100% |
5-bromopyrimidine
1-t-Butoxycarbonylpiperazine
tert-butyl 4-(pyrimidin-5-yl)piperazine-1-carboxylate
Conditions | Yield |
---|---|
Stage #1: 5-bromopyrimidine; 1-t-Butoxycarbonylpiperazine With tri-tert-butyl phosphine; palladium diacetate; sodium t-butanolate In xylene at 50℃; Stage #2: With macroporous polymer-supported isocyanate In xylene at 50℃; for 24h; | 100% |
With tris-(dibenzylideneacetone)dipalladium(0); caesium carbonate; 2,2'-bis-(diphenylphosphino)-1,1'-binaphthyl In toluene at 90℃; for 12h; | 58.7% |
Stage #1: 5-bromopyrimidine; 1-t-Butoxycarbonylpiperazine With sodium t-butanolate In toluene for 0.25h; Heating / reflux; Stage #2: palladium diacetate; tri-tert-butyl phosphine for 32h; Heating / reflux; | |
With tris-(dibenzylideneacetone)dipalladium(0); potassium tert-butylate; 4,5-bis(diphenylphos4,5-bis(diphenylphosphino)-9,9-dimethylxanthenephino)-9,9-dimethylxanthene In toluene for 16h; Reflux; Inert atmosphere; |
para-nitrophenyl bromide
1-t-Butoxycarbonylpiperazine
tert-butyl 4-(4-nitrophenyl)piperazine-1-carboxylate
Conditions | Yield |
---|---|
Stage #1: para-nitrophenyl bromide; 1-t-Butoxycarbonylpiperazine With tri-tert-butyl phosphine; palladium diacetate; sodium t-butanolate In xylene at 50℃; Stage #2: With macroporous polymer-supported isocyanate In xylene at 50℃; for 24h; | 100% |
With Pd(PAd3)(4-FC6H4)Br; triethylamine In water; toluene at 80℃; for 24h; Inert atmosphere; Glovebox; | 89% |
1-bromo-3-chlorobenzene
1-t-Butoxycarbonylpiperazine
tert-butyl 4-(3-chlorophenyl)piperazine-1-carboxylate
Conditions | Yield |
---|---|
Stage #1: 1-bromo-3-chlorobenzene; 1-t-Butoxycarbonylpiperazine With tri-tert-butyl phosphine; palladium diacetate; sodium t-butanolate In xylene at 50℃; Stage #2: With macroporous polymer-supported isocyanate In xylene at 50℃; for 24h; | 100% |
With sodium t-butanolate; tris-(dibenzylideneacetone)dipalladium(0); 2,2'-bis-(diphenylphosphino)-1,1'-binaphthyl In toluene at 100℃; | 83% |
With tris-(dibenzylideneacetone)dipalladium(0); caesium carbonate; XPhos In 1,4-dioxane at 95℃; for 2h; Inert atmosphere; | 61.2% |
With bis(dibenzylideneacetone)-palladium(0); sodium t-butanolate; DavePhos | |
With tris-(dibenzylideneacetone)dipalladium(0); potassium tert-butylate; 2,2'-bis-(diphenylphosphino)-1,1'-binaphthyl In toluene for 16h; Inert atmosphere; Heating; | 1.5 g |
3-bromo-1-trifluoromethylbenzene
1-t-Butoxycarbonylpiperazine
Conditions | Yield |
---|---|
Stage #1: 3-bromo-1-trifluoromethylbenzene; 1-t-Butoxycarbonylpiperazine With tri-tert-butyl phosphine; palladium diacetate; sodium t-butanolate In xylene at 50℃; Stage #2: With macroporous polymer-supported isocyanate In xylene at 50℃; for 24h; | 100% |
With Quinuclidine; nickel(II) bromide trihydrate In N,N-dimethyl acetamide at 20℃; for 3h; Sealed tube; Irradiation; Inert atmosphere; | 60% |
2-bromonaphthalene
1-t-Butoxycarbonylpiperazine
1,1-dimethylethyl 4-(2-naphthalenyl)-1-piperazinecarboxylate
Conditions | Yield |
---|---|
Stage #1: 2-bromonaphthalene; 1-t-Butoxycarbonylpiperazine With tri-tert-butyl phosphine; palladium diacetate; sodium t-butanolate In xylene at 50℃; Stage #2: With macroporous polymer-supported isocyanate In xylene at 50℃; for 24h; | 100% |
With bis(dibenzylideneacetone)-palladium(0); sodium t-butanolate; DavePhos |
3-cyanobromobenzene
1-t-Butoxycarbonylpiperazine
1,1-dimethylethyl 4-(3-cyanophenyl)piperazine-1-carboxylate
Conditions | Yield |
---|---|
Stage #1: 3-cyanobromobenzene; 1-t-Butoxycarbonylpiperazine With tri-tert-butyl phosphine; palladium diacetate; sodium t-butanolate In xylene at 50℃; Stage #2: With macroporous polymer-supported isocyanate In xylene at 50℃; for 24h; | 100% |
With palladium diacetate; caesium carbonate; 2,2'-bis-(diphenylphosphino)-1,1'-binaphthyl In toluene for 4h; Reflux; Inert atmosphere; | 60% |
With sodium t-butanolate; tris-(dibenzylideneacetone)dipalladium(0); (R)-(+)-2,2′-bis(diphenylphosphino)-1,1′-binaphthalene In toluene at 80℃; for 3h; | |
With sodium t-butanolate; palladium diacetate; (R)-2,2'-bis(diphenylphosphanyl)-1,1'-binaphthyl In toluene at 80℃; for 16h; | |
With palladium diacetate; sodium t-butanolate; XPhos In toluene at 90℃; Buchwald-Hartwig Coupling; |
3,5-difluorobromobenzene
1-t-Butoxycarbonylpiperazine
tert-butyl 4-(3,5-difluorophenyl)piperazine-1-carboxylate
Conditions | Yield |
---|---|
Stage #1: 3,5-difluorobromobenzene; 1-t-Butoxycarbonylpiperazine With tri-tert-butyl phosphine; palladium diacetate; sodium t-butanolate In xylene at 50℃; Stage #2: With macroporous polymer-supported isocyanate In xylene at 50℃; for 24h; | 100% |
With tris-(dibenzylideneacetone)dipalladium(0); johnphos; sodium t-butanolate In toluene for 15h; Inert atmosphere; Reflux; | 100% |
With tris-(dibenzylideneacetone)dipalladium(0); johnphos; sodium t-butanolate In toluene for 15.5h; Time; Inert atmosphere; Reflux; | 100% |
With Quinuclidine; nickel(II) bromide trihydrate In N,N-dimethyl acetamide at 20℃; for 3h; Sealed tube; Irradiation; Inert atmosphere; | 62% |
4-fluoro-2-nitrobenzaldehyde
1-t-Butoxycarbonylpiperazine
tert-butyl 4-(4-formyl-3-nitrophenyl)piperazine-1-carboxylate
Conditions | Yield |
---|---|
In dimethyl sulfoxide at 80℃; for 5h; | 100% |
2-(4-fluorophenoxy)-ethylbromide
1-t-Butoxycarbonylpiperazine
4-[2-(4-fluorophenoxy)ethyl]piperazine-1-carboxylic acid tert-butyl ester
Conditions | Yield |
---|---|
With caesium carbonate In N,N-dimethyl-formamide at 20℃; for 24h; | 100% |
4-Fluorobenzyl bromide
1-t-Butoxycarbonylpiperazine
4-(4-fluorobenzyl)piperazine-1-tert-butoxycarbonyl ester
Conditions | Yield |
---|---|
With triethylamine In tetrahydrofuran at 20℃; for 22h; | 100% |
With triethylamine In dichloromethane at 0 - 20℃; | 98.3% |
With N-ethyl-N,N-diisopropylamine In dichloromethane at 20℃; for 16h; | 88% |
With potassium carbonate In acetonitrile at 30℃; for 16h; | 79% |
With triethylamine In dichloromethane at 20℃; | 60% |
2',4',5'-trifluoroacetophenone
1-t-Butoxycarbonylpiperazine
4-(4-acetyl-2,5-difluorophenyl)piperazine-1-carboxylic acid tert-butyl ester
Conditions | Yield |
---|---|
With pyridine; triethylamine at 20℃; for 48h; | 100% |
With potassium carbonate In DMF (N,N-dimethyl-formamide) at 40℃; for 68h; |
4-(Methylthio)benzaldehyde
1-t-Butoxycarbonylpiperazine
Conditions | Yield |
---|---|
Stage #1: 4-(Methylthio)benzaldehyde; 1-t-Butoxycarbonylpiperazine In methanol for 0.5h; Stage #2: With borohydride; polymer-supported In methanol for 24h; | 100% |
dimethylamino sulfonyl chloride
1-t-Butoxycarbonylpiperazine
(S)-6'-chloro-N-((R)-hept-6-en-3-ylsulfonyl)-5-((2-((S)-1-hydroxyallyl)-2-methylcyclobutyl)methyl)-3',4,4',5-tetrahydro-2H,2’H-spiro[benzo[b][1,4]oxazepine-3,1’-naphthalene]-7-carboxamide
Conditions | Yield |
---|---|
With N-ethyl-N,N-diisopropylamine In dichloromethane at 20℃; for 24h; Inert atmosphere; | 100% |
With triethylamine In dichloromethane at 20℃; for 12h; | 92% |
With triethylamine at 0 - 20℃; for 4h; Inert atmosphere; | 89% |
(6-bromonaphthalen-2-yl)sulfonyl chloride
1-t-Butoxycarbonylpiperazine
Conditions | Yield |
---|---|
With triethylamine In 4-(dicyanomethylene)-2-methyl-6-(p-dimethylaminostyryl)-4H-pyran | 100% |
With sodium hydrogencarbonate In ethyl acetate at 20℃; for 1h; | 2.83 g |
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