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Zibo Hangyu Biotechnology Development Co., Ltd

Zibo Hangyu Biotechnology Development Co., Ltd is a leading manufacturer and supplier of chemicals in China. We develop produce and distribute high quality pharmaceuticals, intermediates, special chemicals and OLED intermediates and other fine chemi

N-Boc-L-tert-Leucine

Cas:62965-35-9

Min.Order:10 Gram

FOB Price: $100.0

Type:Lab/Research institutions

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Anhui Dexinjia Biopharm Co., Ltd

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, T

N-Boc-L-tert-Leucine

Cas:62965-35-9

Min.Order:1 Kilogram

Negotiable

Type:Manufacturers

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Chemvon Biotechnology Co. Ltd.

Synonym:N-(tert-Butoxycarbonyl)-L-tert-leucine; (S)-N-Boc-2-Amino-3,3-dimethylbutyric acid

N-Boc-L-tert-Leucine

Cas:62965-35-9

Min.Order:0 Metric Ton

Negotiable

Type:Lab/Research institutions

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Dayang Chem (Hangzhou) Co.,Ltd.

Dayangchem's R&D center can offer custom synthesis according to the contract research and development services for the fine chemicals, pharmaceutical, biotechnique and some of the other chemicals. DayangChem can provide different quantities

N-Boc-L-tert-Leucine

Cas:62965-35-9

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 N-Boc-L-Tert-Leucine supplier in China

Cas:62965-35-9

Min.Order:1 Kilogram

Negotiable

Type:Manufacturers

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Wuhan Fortuna Chemical Co.,Ltd

Unique advantages of N-Boc-L-tert-Leucine Cas 62965-35-9 Guaranteed purity High quality & competitive price Quality control Fast feedback Prompt shipment Appearance:White to almost white crystalline powder Storage:cool dry place Package:25kg

Manufacturer high quality N-Boc-L-tert-Leucine Cas 62965-35-9 with good price

Cas:62965-35-9

Min.Order:25 Kilogram

Negotiable

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

boc-l-tert-leucine

Cas:62965-35-9

Min.Order:1 Metric Ton

FOB Price: $1.0 / 2.0

Type:Manufacturers

inquiry

Henan Allgreen Chemical Co.,Ltd

high quality Appearance:White or off white powder Storage:Sealed, dry, microtherm , avoid light and smell. Package:According to the demand of customer Application:Organic synthesis Transportation:by air or by sea Port:shanghai

N-Boc-L-tert-Leucine

Cas:62965-35-9

Min.Order:1 Kilogram

Negotiable

Type:Manufacturers

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Chemwill Asia Co., Ltd.

Our main production base is located in Xuzhou industry park. We are certified both to the ISO 9001 and ISO 14001 Standards, have a safety management system in place.Our R&D team masters core technology for process-design of target building block

Nα-tert-Butoxycarbonyl-L-tert-leucine

Cas:62965-35-9

Min.Order:5 Kiloliter

FOB Price: $1.2 / 5.0

Type:Manufacturers

inquiry

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 on.O

high quality N-Boc-L-tert-Leucine

Cas:62965-35-9

Min.Order:1 Kilogram

FOB Price: $1.0

Type:Lab/Research institutions

inquiry

Hebei Nengqian Chemical Import and Export Co., LTD

Our advantages: 1. High quality and competitive price: 1) Standard: BP/USP/EP/ enterprise standard 2) All purity ≥99% 3) We are manufacturers and can provide high quality products at factory prices. 2. Fast and safe delivery 1) The package c

N-Boc-L-tert-Leucine CAS:62965-35-9

Cas:62965-35-9

Min.Order:1 Kilogram

FOB Price: $199.0 / 222.0

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 62965-35-9 with best quality

Cas:62965-35-9

Min.Order:1 Kilogram

FOB Price: $139.0 / 210.0

Type:Trading Company

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Hebei Sankai Chemical Technology Co., Ltd

1. Product advantages ♦ High purity, all above 98.5%, no impurities after dissolution ♦ We will test each batch to ensure quality ♦ OEM and private brand services designed for free ♦ Various cap colors available ♦ W

Boc-Tle-OH CAS:62965-35-9

Cas:62965-35-9

Min.Order:1 Kilogram

FOB Price: $30.0 / 50.0

Type:Trading Company

inquiry

Henan Sinotech Import&Export Corporation

Product name boc-L-tert-leucine Alias Boc-Leu-OH; N-BOC-L-tert-Leucine; Boc-tBu-Gly-OH; Boc-Tle-OH; NALPHA-tert-Butoxycarbonyl-L-tert-leucine; N-(tert-Butoxycarbonyl)-L-leucine; (2S)-2-[(tert-butoxy

boc-L-tert-leucine

Cas:62965-35-9

Min.Order:1 Kilogram

FOB Price: $1.0

Type:Other

inquiry

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 62965-35-9 N-Boc-L-tert-Leucine

Cas:62965-35-9

Min.Order:10 Gram

Negotiable

Type:Other

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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

N-Boc-L-tert-Leucine 62965-35-9

Cas:62965-35-9

Min.Order:1 Kilogram

Negotiable

Type:Lab/Research institutions

inquiry

Baoji Guokang Healthchem co.,ltd

Our company has been in existence for 10 years since its establishment. We have our own unique team. The company integrates independent research and development, production and sales. We have established famous brands at home and abroad. At prese

N-Boc-L-tert-Leucine

Cas:62965-35-9

Min.Order:1 Kilogram

FOB Price: $68.0 / 75.0

Type:Trading Company

inquiry

Qingdao Beluga Import and Export Co., LTD

N-Boc-L-tert-Leucine CAS:62965-35-9 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 quality organic inte

N-Boc-L-tert-Leucine CAS:62965-35-9

Cas:62965-35-9

Min.Order:1 Gram

Negotiable

Type:Lab/Research institutions

inquiry

Shandong Hanjiang Chemical Co., Ltd.

Hello, 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

N-Boc-L-tert-Leucine

Cas:62965-35-9

Min.Order:1 Kilogram

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 62965-35-9 N-Boc-L-tert-Leucine

Cas:62965-35-9

Min.Order:1 Kilogram

Negotiable

Type:Lab/Research institutions

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

CAS NO.:62965-35-9

Cas:62965-35-9

Min.Order:0

Negotiable

Type:Lab/Research institutions

inquiry

Hebei Quanhe Biotechnology Co. LTD

1. Timely and efficient service to ensure communication with customers 2. Produce products of different specifications and sizes according to your requirements. 3. Quality procedures and standards recognized by SGS. Advanced plant equipment ensures

Boc-Tle-OH

Cas:62965-35-9

Min.Order:1 Kilogram

FOB Price: $20.0 / 30.0

Type:Lab/Research institutions

inquiry

Guangdong Juda Chemical Industrial Co.,Limited

1) For products exported we can offer COA Certificate and official PI. 2) We are manufacturer with own lab and factory, can provide high quality products with factory price. 3) Products can be sent out in 24 hours after payment. Tracking number avai

N-Boc-L-Tert-Leucine CAS 62965-35-9 with low price

Cas:62965-35-9

Min.Order:100 Kilogram

Negotiable

Type:Trading Company

inquiry

Leader Biochemical Group

PRODUCT DETAILS

China Original Largest Manufacturer sales N-Boc-L-tert-Leucine CAS 62965-35-9

Cas:62965-35-9

Min.Order:500 Kilogram

FOB Price: $1.0 / 2.0

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

BOC-L-Tert-Leucine

Cas:62965-35-9

Min.Order:10 Kilogram

Negotiable

Type:Trading Company

inquiry

Hangzhou Keyingchem Co.,Ltd

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

BOC-L-Tert-Leucine

Cas:62965-35-9

Min.Order:0 Metric Ton

Negotiable

Type:Lab/Research institutions

inquiry

Afine Chemicals Limited

Our Services 1. New Molecules R&D 2. Own test center HPLC NMR GC LC-MS 3. API and Intermediates from China reputed manufacturers 4. Documents support COA MOA MSDS DMF open part Our advantages 1. Government awarded company. Top 100 enter

BOC-L-TERT-LEUCINE

Cas:62965-35-9

Min.Order:0

Negotiable

Type:Lab/Research institutions

inquiry

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

Factory Supply boc-L-tert-leucine

Cas:62965-35-9

Min.Order:0 Metric Ton

Negotiable

Type:Other

inquiry

Hangzhou J&H Chemical Co., Ltd.

J&H CHEM R&D center can offer custom synthesis according to the contract research and development services for the fine chemicals, pharmaceutical, biotechnique and some of the other chemicals. J&H CHEM has some Manufacturing base in Jia

N-Boc-L-tert-Leucine

Cas:62965-35-9

Min.Order:0

Negotiable

Type:Lab/Research institutions

inquiry

Chemlyte Solutions

Chemlyte Solutions believe that customers and suppliers deserve much more than what traditional distributors can offer. To grow in today s fast-paced and increasingly competitive market it is essential to be able to quickly adapt to market forces eff

Featured products boc-L-tert-leucine

Cas:62965-35-9

Min.Order:100 Gram

Negotiable

Type:Other

inquiry

Synthetic route

L-tert-Leucine
20859-02-3

L-tert-Leucine

di-tert-butyl dicarbonate
24424-99-5

di-tert-butyl dicarbonate

N-tert-butyloxycarbonyl-L-tert-leucine
62965-35-9

N-tert-butyloxycarbonyl-L-tert-leucine

Conditions
ConditionsYield
With triethylamine In methanol at 0 - 5℃;100%
With triethylamine In methanol at 0 - 5℃;100%
With sodium hydroxide In 1,4-dioxane at 20℃; for 12h;100%
NaHSO4·H2O

NaHSO4·H2O

L-tert-Leucine
20859-02-3

L-tert-Leucine

di-tert-butyl dicarbonate
24424-99-5

di-tert-butyl dicarbonate

N-tert-butyloxycarbonyl-L-tert-leucine
62965-35-9

N-tert-butyloxycarbonyl-L-tert-leucine

Conditions
ConditionsYield
With triethylamine In 1,4-dioxane; water99%
With triethylamine In 1,4-dioxane; water99%
D,L-N-Boc-t-leucine methyl ester

D,L-N-Boc-t-leucine methyl ester

A

N-tert-butyloxycarbonyl-L-tert-leucine
62965-35-9

N-tert-butyloxycarbonyl-L-tert-leucine

B

N-Boc-D-tert-leucine methyl ester
153960-35-1

N-Boc-D-tert-leucine methyl ester

Conditions
ConditionsYield
With Bacillus licheniformis In water at 35℃; for 23h; pH=7.8;A 93%
B n/a
With Bacillus licheniformis In water at 35℃; for 18h; pH=7.8;A n/a
B 82%
N-Boc-L-tert-leucinol
153645-26-2

N-Boc-L-tert-leucinol

N-tert-butyloxycarbonyl-L-tert-leucine
62965-35-9

N-tert-butyloxycarbonyl-L-tert-leucine

Conditions
ConditionsYield
With sodium hypochlorite; 2,2,6,6-Tetramethyl-1-piperidinyloxy free radical; Isopropyl acetate; sodium hydrogencarbonate; sodium bromide at 0 - 25℃;73%
C14H21F6NO4

C14H21F6NO4

A

N-tert-butyloxycarbonyl-L-tert-leucine
62965-35-9

N-tert-butyloxycarbonyl-L-tert-leucine

B

(R)-2-(tert-butoxycarbonylamino)-3,3-dimethylbutanoic acid
124655-17-0

(R)-2-(tert-butoxycarbonylamino)-3,3-dimethylbutanoic acid

Conditions
ConditionsYield
With C28H30N3O2(1+)*Br(1-); sodium hydroxide In chloroform at 0℃; for 24h;A 52%
B n/a
N-(tert-butyloxycarbonyl) azide
1070-19-5

N-(tert-butyloxycarbonyl) azide

L-tert-Leucine
20859-02-3

L-tert-Leucine

N-tert-butyloxycarbonyl-L-tert-leucine
62965-35-9

N-tert-butyloxycarbonyl-L-tert-leucine

Conditions
ConditionsYield
With sodium hydroxide In 1,4-dioxane
L-tert-Leucine
20859-02-3

L-tert-Leucine

2-(tert-Butoxycarbonyloxyimino)-2-phenylacetonitrile
58632-95-4

2-(tert-Butoxycarbonyloxyimino)-2-phenylacetonitrile

N-tert-butyloxycarbonyl-L-tert-leucine
62965-35-9

N-tert-butyloxycarbonyl-L-tert-leucine

Conditions
ConditionsYield
With triethylamine In 1,4-dioxane; water for 4h; Ambient temperature;
(4S,5R)-3-tert-butoxycarbonyl-4-tert-butyl-5-methoxy-2-oxazolidinone
335628-21-2

(4S,5R)-3-tert-butoxycarbonyl-4-tert-butyl-5-methoxy-2-oxazolidinone

N-tert-butyloxycarbonyl-L-tert-leucine
62965-35-9

N-tert-butyloxycarbonyl-L-tert-leucine

Conditions
ConditionsYield
With potassium hydroxide; potassium permanganate In water; tert-butyl alcohol
D,L-N-Boc-t-leucine methyl ester

D,L-N-Boc-t-leucine methyl ester

A

N-tert-butyloxycarbonyl-L-tert-leucine
62965-35-9

N-tert-butyloxycarbonyl-L-tert-leucine

B

(R)-2-(tert-butoxycarbonylamino)-3,3-dimethylbutanoic acid
124655-17-0

(R)-2-(tert-butoxycarbonylamino)-3,3-dimethylbutanoic acid

C

N-Boc-D-tert-leucine methyl ester
153960-35-1

N-Boc-D-tert-leucine methyl ester

Conditions
ConditionsYield
With subtilisin In water at 35℃; for 18h; pH=7.5;
D,L-N-Boc-t-leucine methyl ester

D,L-N-Boc-t-leucine methyl ester

A

N-tert-butyloxycarbonyl-L-tert-leucine
62965-35-9

N-tert-butyloxycarbonyl-L-tert-leucine

B

N-Boc-D-tert-leucine methyl ester
153960-35-1

N-Boc-D-tert-leucine methyl ester

C

2-tert-butoxycarbonylamino-3,3-dimethylbutyric acid methyl ester
176504-88-4

2-tert-butoxycarbonylamino-3,3-dimethylbutyric acid methyl ester

Conditions
ConditionsYield
With subtilisin In water at 35℃; for 15h; pH=7.5;
(4S,5R)-4-tert-butyl-5-methoxy-2-oxazolidinone
335627-81-1

(4S,5R)-4-tert-butyl-5-methoxy-2-oxazolidinone

N-tert-butyloxycarbonyl-L-tert-leucine
62965-35-9

N-tert-butyloxycarbonyl-L-tert-leucine

Conditions
ConditionsYield
Multi-step reaction with 2 steps
1: Et3N; DMAP / CH2Cl2 / 2 h / 20 °C
2: KMnO4; KOH / 2-methyl-propan-2-ol; H2O
View Scheme
di-tert-butyl dicarbonate
24424-99-5

di-tert-butyl dicarbonate

tert-butylaminoacetic acid
58482-93-2

tert-butylaminoacetic acid

N-tert-butyloxycarbonyl-L-tert-leucine
62965-35-9

N-tert-butyloxycarbonyl-L-tert-leucine

Conditions
ConditionsYield
In tetrahydrofuran; sodium hydroxide
t-butoxycarbonyl-anhydride

t-butoxycarbonyl-anhydride

L-tert-Leucine
20859-02-3

L-tert-Leucine

N-tert-butyloxycarbonyl-L-tert-leucine
62965-35-9

N-tert-butyloxycarbonyl-L-tert-leucine

Conditions
ConditionsYield
With hydrogenchloride; sodium hydroxide In 1,4-dioxane; water; ethyl acetate
(S)-ethyl 3,3-dimethyl-2-[(S)-phenylmethanesulfinamido]butanoate
1203546-60-4

(S)-ethyl 3,3-dimethyl-2-[(S)-phenylmethanesulfinamido]butanoate

N-tert-butyloxycarbonyl-L-tert-leucine
62965-35-9

N-tert-butyloxycarbonyl-L-tert-leucine

Conditions
ConditionsYield
Multi-step reaction with 3 steps
1: hydrogenchloride / methanol
2: triethylamine
3: lithium hydroxide / water
View Scheme
(E)-[(S)-2-methylpropane-2-sulfinylimino]acetic acid ethyl ester

(E)-[(S)-2-methylpropane-2-sulfinylimino]acetic acid ethyl ester

N-tert-butyloxycarbonyl-L-tert-leucine
62965-35-9

N-tert-butyloxycarbonyl-L-tert-leucine

Conditions
ConditionsYield
Multi-step reaction with 4 steps
1: tetrahydrofuran / 12 h / -20 - 20 °C / Inert atmosphere
2: hydrogenchloride / methanol
3: triethylamine
4: lithium hydroxide / water
View Scheme
C13H25NO4
1465120-76-6

C13H25NO4

N-tert-butyloxycarbonyl-L-tert-leucine
62965-35-9

N-tert-butyloxycarbonyl-L-tert-leucine

Conditions
ConditionsYield
With lithium hydroxide In water
di-tert-butyl dicarbonate
24424-99-5

di-tert-butyl dicarbonate

ethyl (S)-2-amino-3,3-dimethylbutanoate
69557-34-2

ethyl (S)-2-amino-3,3-dimethylbutanoate

N-tert-butyloxycarbonyl-L-tert-leucine
62965-35-9

N-tert-butyloxycarbonyl-L-tert-leucine

Conditions
ConditionsYield
Multi-step reaction with 2 steps
1: triethylamine
2: lithium hydroxide / water
View Scheme
(S)-ethyl 2-[butanesulfinamido]-3,3-dimethylbutanoate

(S)-ethyl 2-[butanesulfinamido]-3,3-dimethylbutanoate

N-tert-butyloxycarbonyl-L-tert-leucine
62965-35-9

N-tert-butyloxycarbonyl-L-tert-leucine

Conditions
ConditionsYield
Multi-step reaction with 3 steps
1: thionyl chloride / methanol
2: triethylamine
3: lithium hydroxide / water
View Scheme
(R)-1-chloro-3,3-dimethyl-2-butanol
152488-38-5

(R)-1-chloro-3,3-dimethyl-2-butanol

N-tert-butyloxycarbonyl-L-tert-leucine
62965-35-9

N-tert-butyloxycarbonyl-L-tert-leucine

Conditions
ConditionsYield
Multi-step reaction with 4 steps
1: di-isopropyl azodicarboxylate; triphenylphosphine / toluene / 15 h / -5 - 5 °C / Heating
2: hydrogenchloride; water / 15 h / Reflux
3: sodium hydroxide / water; ethanol / 40 - 50 °C
4: sodium hydrogencarbonate; sodium bromide; 2,2,6,6-Tetramethyl-1-piperidinyloxy free radical; Isopropyl acetate; sodium hypochlorite / 0 - 25 °C
View Scheme
C10H16ClNO2

C10H16ClNO2

N-tert-butyloxycarbonyl-L-tert-leucine
62965-35-9

N-tert-butyloxycarbonyl-L-tert-leucine

Conditions
ConditionsYield
Multi-step reaction with 3 steps
1: hydrogenchloride; water / 15 h / Reflux
2: sodium hydroxide / water; ethanol / 40 - 50 °C
3: sodium hydrogencarbonate; sodium bromide; 2,2,6,6-Tetramethyl-1-piperidinyloxy free radical; Isopropyl acetate; sodium hypochlorite / 0 - 25 °C
View Scheme
N-tert-butyloxycarbonyl-L-tert-leucine
62965-35-9

N-tert-butyloxycarbonyl-L-tert-leucine

(S)-tert-butyl (1-amino-3,3-dimethyl-1-oxobutan-2-yl)carbamate
372199-21-8

(S)-tert-butyl (1-amino-3,3-dimethyl-1-oxobutan-2-yl)carbamate

Conditions
ConditionsYield
With ammonium chloride; benzotriazol-1-ol; 1-ethyl-(3-(3-dimethylamino)propyl)-carbodiimide hydrochloride; N-ethyl-N,N-diisopropylamine In N,N-dimethyl-formamide at 20℃; for 16h;100%
With 4-methyl-morpholine; ammonium chloride; 1-ethyl-(3-(3-dimethylamino)propyl)-carbodiimide hydrochloride In N,N-dimethyl-formamide at 20℃;
Stage #1: N-tert-butyloxycarbonyl-L-tert-leucine With 4-methyl-morpholine; isobutyl chloroformate In tetrahydrofuran at -20℃; for 0.5h;
Stage #2: With ammonium hydroxide In tetrahydrofuran at -20 - 20℃;
With pyridine; di-tert-butyl dicarbonate; ammonium bicarbonate
N-tert-butyloxycarbonyl-L-tert-leucine
62965-35-9

N-tert-butyloxycarbonyl-L-tert-leucine

L-4-hydroxyproline methyl ester hydrochloride
40216-83-9

L-4-hydroxyproline methyl ester hydrochloride

(2S,4R)-methyl 1-{(S)-2-[(tert-butoxycarbonyl)amino]-3,3-dimethylbutanoyl}-4-hydroxypyrrolidine-2-carboxylate
630421-45-3

(2S,4R)-methyl 1-{(S)-2-[(tert-butoxycarbonyl)amino]-3,3-dimethylbutanoyl}-4-hydroxypyrrolidine-2-carboxylate

Conditions
ConditionsYield
With N-ethyl-N,N-diisopropylamine; HATU In dichloromethane at 0 - 20℃;100%
With N-ethyl-N,N-diisopropylamine; N-[(dimethylamino)-3-oxo-1H-1,2,3-triazolo[4,5-b]pyridin-1-yl-methylene]-N-methylmethanaminium hexafluorophosphate In N,N-dimethyl-formamide at 0 - 20℃; for 16h;98%
With benzotriazol-1-ol; 1-ethyl-(3-(3-dimethylamino)propyl)-carbodiimide hydrochloride; N-ethyl-N,N-diisopropylamine In N,N-dimethyl-formamide at 20℃; for 12h;92%
N-tert-butyloxycarbonyl-L-tert-leucine
62965-35-9

N-tert-butyloxycarbonyl-L-tert-leucine

benzyl bromide
100-39-0

benzyl bromide

(S)-benzyl 2-(tert-butoxycarbonylamino)-3,3-dimethylbutanoic acid
154092-61-2

(S)-benzyl 2-(tert-butoxycarbonylamino)-3,3-dimethylbutanoic acid

Conditions
ConditionsYield
With potassium carbonate In N,N-dimethyl-formamide at 20℃; for 72h;100%
With 1,8-diazabicyclo[5.4.0]undec-7-ene In acetonitrile at 0 - 22℃; for 3.5h;98%
With 1,8-diazabicyclo[5.4.0]undec-7-ene In acetonitrile at 0 - 20℃; for 3.08333h;93%
With potassium carbonate In N,N-dimethyl-formamide at 20℃; for 72h;
4R-(7-methoxy-2-pyrazol-1-yl-quinolin-4-yloxy)-pyrrolidine-2S-carboxylic acid methyl ester hydrochloride
918662-07-4

4R-(7-methoxy-2-pyrazol-1-yl-quinolin-4-yloxy)-pyrrolidine-2S-carboxylic acid methyl ester hydrochloride

N-tert-butyloxycarbonyl-L-tert-leucine
62965-35-9

N-tert-butyloxycarbonyl-L-tert-leucine

1-(2S-tert-butoxycarbonylamino-3,3-dimethylbutyryl)-4R-(7-methoxy-2-pyrazol-1-yl-quinolin-4-yloxy)-pyrrolidine-2S-carboxylic acid methyl ester
918662-09-6

1-(2S-tert-butoxycarbonylamino-3,3-dimethylbutyryl)-4R-(7-methoxy-2-pyrazol-1-yl-quinolin-4-yloxy)-pyrrolidine-2S-carboxylic acid methyl ester

Conditions
ConditionsYield
With N-ethyl-N,N-diisopropylamine; HATU In dichloromethane; N,N-dimethyl-formamide at 20℃; for 16h;100%
4R-(5-chloropyridin-2-yloxy)-pyrrolidine-2S-carboxylic acid methyl ester hydrochloride salt

4R-(5-chloropyridin-2-yloxy)-pyrrolidine-2S-carboxylic acid methyl ester hydrochloride salt

N-tert-butyloxycarbonyl-L-tert-leucine
62965-35-9

N-tert-butyloxycarbonyl-L-tert-leucine

1-(2S-tert-butoxycarbonylamino-3,3-dimethylbutyryl)-4R-(5-chloropyridin-2-yloxy)-pyrrolidine-2S-carboxylic acid methyl ester

1-(2S-tert-butoxycarbonylamino-3,3-dimethylbutyryl)-4R-(5-chloropyridin-2-yloxy)-pyrrolidine-2S-carboxylic acid methyl ester

Conditions
ConditionsYield
With N-ethyl-N,N-diisopropylamine; HATU In dichloromethane; N,N-dimethyl-formamide at 20℃; for 16h;100%
N-tert-butyloxycarbonyl-L-tert-leucine
62965-35-9

N-tert-butyloxycarbonyl-L-tert-leucine

methyl iodide
74-88-4

methyl iodide

methyl (2S)-3,3-Dimethyl-2-[methyl-[(2-methylpropan-2-yl)oxycarbonyl]amino]butanoate
287210-99-5

methyl (2S)-3,3-Dimethyl-2-[methyl-[(2-methylpropan-2-yl)oxycarbonyl]amino]butanoate

Conditions
ConditionsYield
With silver(l) oxide In N,N-dimethyl-formamide at 45℃; Inert atmosphere;100%
Stage #1: N-tert-butyloxycarbonyl-L-tert-leucine With sodium hydride In N,N-dimethyl-formamide at 0 - 20℃; for 0.5h; Inert atmosphere;
Stage #2: methyl iodide In N,N-dimethyl-formamide at 20℃; for 8h;
89%
With sodium hydride In N,N-dimethyl-formamide at 0 - 20℃;
N-tert-butyloxycarbonyl-L-tert-leucine
62965-35-9

N-tert-butyloxycarbonyl-L-tert-leucine

N,N-dimethylammonium chloride
506-59-2

N,N-dimethylammonium chloride

(S)-tert-butyl 1-(dimethylamino)-3,3-dimethyl-1-oxobutan-2-ylcarbamate
340161-34-4

(S)-tert-butyl 1-(dimethylamino)-3,3-dimethyl-1-oxobutan-2-ylcarbamate

Conditions
ConditionsYield
Stage #1: N-tert-butyloxycarbonyl-L-tert-leucine With HBTU In dichloromethane for 0.0333333h; Inert atmosphere;
Stage #2: N,N-dimethylammonium chloride With N-ethyl-N,N-diisopropylamine In dichloromethane for 1.5h; Inert atmosphere;
100%
With triethylamine; dicyclohexyl-carbodiimide In dichloromethane at 20℃; for 12h; Cooling with ice;91%
With 1-ethyl-(3-(3-dimethylamino)propyl)-carbodiimide hydrochloride; N-ethyl-N,N-diisopropylamine In dichloromethane at 20℃; for 18h;
With benzotriazol-1-ol; 1-ethyl-(3-(3-dimethylamino)propyl)-carbodiimide hydrochloride; N-ethyl-N,N-diisopropylamine In dichloromethane at 0 - 20℃; for 3h;
(R)-3-[(2S,3S)-2-amino-3-phenylbutyrylamino]-3-(thiazol-2-yl)propanoic acid methyl ester
66854-34-0

(R)-3-[(2S,3S)-2-amino-3-phenylbutyrylamino]-3-(thiazol-2-yl)propanoic acid methyl ester

N-tert-butyloxycarbonyl-L-tert-leucine
62965-35-9

N-tert-butyloxycarbonyl-L-tert-leucine

N-{N'-tert-butoxycarbonyl-L-tert-leucyl-[(3S)-3-methyl-L-phenylalanyl]}-3-amino-3-(thiazol-2-yl)propanoic acid methyl ester
1138161-59-7

N-{N'-tert-butoxycarbonyl-L-tert-leucyl-[(3S)-3-methyl-L-phenylalanyl]}-3-amino-3-(thiazol-2-yl)propanoic acid methyl ester

Conditions
ConditionsYield
With O-(1H-benzotriazol-1-yl)-N,N,N',N'-tetramethyluronium hexafluorophosphate; N-ethyl-N,N-diisopropylamine In dichloromethane; N,N-dimethyl-formamide at 0 - 20℃;100%
With N-ethyl-N,N-diisopropylamine; O-(benzotriazol-1-yl)-N,N,N,N-tetramethyluroniumhexafluorophosphate In dichloromethane; N,N-dimethyl-formamide100%
N-tert-butyloxycarbonyl-L-tert-leucine
62965-35-9

N-tert-butyloxycarbonyl-L-tert-leucine

1,2-diamino-benzene
95-54-5

1,2-diamino-benzene

N-tert-butoxycarbonyl-L-tert-leucine 2-aminoanilide
1138161-53-1

N-tert-butoxycarbonyl-L-tert-leucine 2-aminoanilide

Conditions
ConditionsYield
With O-(1H-benzotriazol-1-yl)-N,N,N',N'-tetramethyluronium hexafluorophosphate; N-ethyl-N,N-diisopropylamine In dichloromethane at 0 - 20℃;100%
4-nitro-benzoic acid 5-(1-methoxycarbonyl-2-vinylcyclopropylcarbamoyl)pyrrolidin-3-yl ester hydrochloride

4-nitro-benzoic acid 5-(1-methoxycarbonyl-2-vinylcyclopropylcarbamoyl)pyrrolidin-3-yl ester hydrochloride

N-tert-butyloxycarbonyl-L-tert-leucine
62965-35-9

N-tert-butyloxycarbonyl-L-tert-leucine

C30H40N4O10
1219511-19-9

C30H40N4O10

Conditions
ConditionsYield
Stage #1: N-tert-butyloxycarbonyl-L-tert-leucine With N-ethyl-N,N-diisopropylamine; HATU In dichloromethane at 20℃; for 0.166667h;
Stage #2: 4-nitro-benzoic acid 5-(1-methoxycarbonyl-2-vinylcyclopropylcarbamoyl)pyrrolidin-3-yl ester hydrochloride With N-ethyl-N,N-diisopropylamine In dichloromethane for 15h;
Stage #3: N-tert-butyloxycarbonyl-L-tert-leucine With N-ethyl-N,N-diisopropylamine; HATU In dichloromethane for 5h;
100%
N-tert-butyloxycarbonyl-L-tert-leucine
62965-35-9

N-tert-butyloxycarbonyl-L-tert-leucine

(S)-methyl 3-(((R)-1,2,3,4-tetrahydronaphthalen-1-yl)carbamoyl)-1,2,3,4-tetrahydroisoquinoline-7-carboxylate

(S)-methyl 3-(((R)-1,2,3,4-tetrahydronaphthalen-1-yl)carbamoyl)-1,2,3,4-tetrahydroisoquinoline-7-carboxylate

(S)-methyl 2-((S)-2-((tert-butoxycarbonyl)amino)-3,3-dimethylbutanoyl)-3-(((R)-1,2,3,4-tetrahydronaphthalen-1-yl)carbamoyl)-1,2,3,4-tetrahydroisoquinoline-7-carboxylate

(S)-methyl 2-((S)-2-((tert-butoxycarbonyl)amino)-3,3-dimethylbutanoyl)-3-(((R)-1,2,3,4-tetrahydronaphthalen-1-yl)carbamoyl)-1,2,3,4-tetrahydroisoquinoline-7-carboxylate

Conditions
ConditionsYield
With 4-methyl-morpholine; 1-hydroxy-7-aza-benzotriazole; 1-ethyl-(3-(3-dimethylamino)propyl)-carbodiimide hydrochloride In dichloromethane at 0 - 20℃; Inert atmosphere;100%
With 4-methyl-morpholine; 1-hydroxy-7-aza-benzotriazole; 1-ethyl-(3-(3-dimethylamino)propyl)-carbodiimide hydrochloride In N,N-dimethyl-formamide at 20℃;
N-tert-butyloxycarbonyl-L-tert-leucine
62965-35-9

N-tert-butyloxycarbonyl-L-tert-leucine

para-bromophenacyl bromide
99-73-0

para-bromophenacyl bromide

(S)-2-(4-bromophenyl)-2-oxoethyl 2-((tert-butoxycarbonyl)amino)-3,3-dimethylbutanoate

(S)-2-(4-bromophenyl)-2-oxoethyl 2-((tert-butoxycarbonyl)amino)-3,3-dimethylbutanoate

Conditions
ConditionsYield
With N-ethyl-N,N-diisopropylamine In acetonitrile at 20℃; for 2h; Cooling with ice;100%
N-tert-butyloxycarbonyl-L-tert-leucine
62965-35-9

N-tert-butyloxycarbonyl-L-tert-leucine

benzyl alcohol
100-51-6

benzyl alcohol

(S)-benzyl 2-(tert-butoxycarbonylamino)-3,3-dimethylbutanoic acid
154092-61-2

(S)-benzyl 2-(tert-butoxycarbonylamino)-3,3-dimethylbutanoic acid

Conditions
ConditionsYield
With dmap; 1-ethyl-(3-(3-dimethylamino)propyl)-carbodiimide hydrochloride; N-ethyl-N,N-diisopropylamine In dichloromethane at 20℃; for 12h;99%
Stage #1: N-tert-butyloxycarbonyl-L-tert-leucine With 2-(tert-Butoxycarbonyloxyimino)-2-phenylacetonitrile; triethylamine In 1,4-dioxane
Stage #2: benzyl alcohol With dmap; N-(3-dimethylaminopropyl)-N-ethylcarbodiimide In dichloromethane at 0℃;
With dmap; 1-ethyl-(3-(3-dimethylamino)propyl)-carbodiimide hydrochloride at 0℃;
N-tert-butyloxycarbonyl-L-tert-leucine
62965-35-9

N-tert-butyloxycarbonyl-L-tert-leucine

methylamine
74-89-5

methylamine

(S)-(2,2-dimethyl-1-methylcarbamoylpropyl)carbamic acid tert-butyl ester
200865-04-9

(S)-(2,2-dimethyl-1-methylcarbamoylpropyl)carbamic acid tert-butyl ester

Conditions
ConditionsYield
With N-ethyl-N,N-diisopropylamine; HATU In DMF (N,N-dimethyl-formamide) at 0 - 20℃; for 4h;99%
Stage #1: methylamine With 1-hydroxy-pyrrolidine-2,5-dione In methanol; N,N-dimethyl-formamide at 20℃; for 0.5h;
Stage #2: N-tert-butyloxycarbonyl-L-tert-leucine With 1-ethyl-(3-(3-dimethylamino)propyl)-carbodiimide hydrochloride In methanol; N,N-dimethyl-formamide at 0 - 20℃; for 3h;
With benzotriazol-1-ol; 1-ethyl-(3-(3-dimethylamino)propyl)-carbodiimide hydrochloride In chloroform at 23℃; for 18h; Inert atmosphere;
With O-(1H-benzotriazol-1-yl)-N,N,N',N'-tetramethyluronium hexafluorophosphate; N-ethyl-N,N-diisopropylamine In dichloromethane at 20℃; Inert atmosphere;
N-tert-butyloxycarbonyl-L-tert-leucine
62965-35-9

N-tert-butyloxycarbonyl-L-tert-leucine

benzylamine
100-46-9

benzylamine

(S)-2-amino-N-benzyl-3,3-dimethylbutanamide
207121-91-3

(S)-2-amino-N-benzyl-3,3-dimethylbutanamide

Conditions
ConditionsYield
Stage #1: N-tert-butyloxycarbonyl-L-tert-leucine; benzylamine With O-(1H-benzotriazol-1-yl)-N,N,N',N'-tetramethyluronium hexafluorophosphate; N-ethyl-N,N-diisopropylamine In dichloromethane for 1.5h;
Stage #2: With trifluoroacetic acid In dichloromethane at 20℃; for 1h; Further stages.;
99%
Stage #1: N-tert-butyloxycarbonyl-L-tert-leucine; benzylamine With O-(1H-benzotriazol-1-yl)-N,N,N',N'-tetramethyluronium hexafluorophosphate; N-ethyl-N,N-diisopropylamine In dichloromethane at 23℃; for 2h;
Stage #2: With trifluoroacetic acid In dichloromethane at 23℃; for 1h; Further stages.;
98%
Stage #1: N-tert-butyloxycarbonyl-L-tert-leucine With benzotriazol-1-ol; 1-ethyl-(3-(3-dimethylamino)propyl)-carbodiimide hydrochloride In dichloromethane at 20℃; for 0.0333333h; Sealed tube;
Stage #2: benzylamine With N-ethyl-N,N-diisopropylamine In dichloromethane at 20℃; for 2h; Sealed tube;
Stage #3: With trifluoroacetic acid In dichloromethane at 20℃; for 1h; Sealed tube;
N-tert-butyloxycarbonyl-L-tert-leucine
62965-35-9

N-tert-butyloxycarbonyl-L-tert-leucine

(R)-4-hydroxy-L-proline ethyl ester
1499-56-5

(R)-4-hydroxy-L-proline ethyl ester

(2S,4R)-methyl 1-{(S)-2-[(tert-butoxycarbonyl)amino]-3,3-dimethylbutanoyl}-4-hydroxypyrrolidine-2-carboxylate
630421-45-3

(2S,4R)-methyl 1-{(S)-2-[(tert-butoxycarbonyl)amino]-3,3-dimethylbutanoyl}-4-hydroxypyrrolidine-2-carboxylate

Conditions
ConditionsYield
With N-ethyl-N,N-diisopropylamine; HATU In dichloromethane at 20℃; for 12h;99%
With N-ethyl-N,N-diisopropylamine; HATU In dichloromethane at 0 - 20℃; for 12h;99%
With 4-methyl-morpholine; 1-ethyl-(3-(3-dimethylamino)propyl)-carbodiimide hydrochloride; tert-butyl alcohol In dichloromethane at 20℃;60%
With N-ethyl-N,N-diisopropylamine; HATU In N,N-dimethyl-formamide at 0 - 20℃; for 18h;
Stage #1: N-tert-butyloxycarbonyl-L-tert-leucine With HATU In dichloromethane at 20℃; for 0.25h;
Stage #2: (R)-4-hydroxy-L-proline ethyl ester With N-ethyl-N,N-diisopropylamine In dichloromethane at 0 - 20℃; for 15h;
2-(1-ethoxycarbonyl-2-vinyl-cyclopropylcarbamoyl)-4-[2-(2-isopropylamino-thiazol-4-yl)-7-methoxy-quinolin-4-yloxy]-pyrrolidine-1-carboxylic acid tert-butyl ester
630424-24-7

2-(1-ethoxycarbonyl-2-vinyl-cyclopropylcarbamoyl)-4-[2-(2-isopropylamino-thiazol-4-yl)-7-methoxy-quinolin-4-yloxy]-pyrrolidine-1-carboxylic acid tert-butyl ester

N-tert-butyloxycarbonyl-L-tert-leucine
62965-35-9

N-tert-butyloxycarbonyl-L-tert-leucine

BocNH-(L-t-BuGly)-[(4R)-[2-(2-isopropylaminothiazol-4-yl)-7-methoxyquinoline-4-oxo]-S-proline]-(1R,2S-vinyl acca)-COOEt
630424-25-8

BocNH-(L-t-BuGly)-[(4R)-[2-(2-isopropylaminothiazol-4-yl)-7-methoxyquinoline-4-oxo]-S-proline]-(1R,2S-vinyl acca)-COOEt

Conditions
ConditionsYield
Stage #1: 2-(1-ethoxycarbonyl-2-vinyl-cyclopropylcarbamoyl)-4-[2-(2-isopropylamino-thiazol-4-yl)-7-methoxy-quinolin-4-yloxy]-pyrrolidine-1-carboxylic acid tert-butyl ester With hydrogenchloride In 1,4-dioxane for 2.5h;
Stage #2: N-tert-butyloxycarbonyl-L-tert-leucine With 4-methyl-morpholine; HATU In DMF (N,N-dimethyl-formamide)
99%
Stage #1: 2-(1-ethoxycarbonyl-2-vinyl-cyclopropylcarbamoyl)-4-[2-(2-isopropylamino-thiazol-4-yl)-7-methoxy-quinolin-4-yloxy]-pyrrolidine-1-carboxylic acid tert-butyl ester With hydrogenchloride In 1,4-dioxane for 2.5h;
Stage #2: N-tert-butyloxycarbonyl-L-tert-leucine With 4-methyl-morpholine; HATU In N,N-dimethyl-formamide
99%
(2S,4R)-N-((1R,2S)-1-(cyclopropylsulfonylcarbamoyl)-2-vinylcyclopropyl)-4-(7-methoxy-2-phenylquinolin-4-yloxy)pyrrolidine-2-carboxamide dihydrochloride

(2S,4R)-N-((1R,2S)-1-(cyclopropylsulfonylcarbamoyl)-2-vinylcyclopropyl)-4-(7-methoxy-2-phenylquinolin-4-yloxy)pyrrolidine-2-carboxamide dihydrochloride

N-tert-butyloxycarbonyl-L-tert-leucine
62965-35-9

N-tert-butyloxycarbonyl-L-tert-leucine

tert-butyl ((S)-1-((2S,4R)-2-(((1R,2S)-1-((cyclopropylsulfonyl)carbamoyl)-2-vinylcyclopropyl)carbamoyl)-4-((7-methoxy-2-phenylquinolin-4-yl)oxy)pyrrolidin-1-yl)-3,3-dimethyl-1-oxobutan-2-yl)carbamate
445304-34-7

tert-butyl ((S)-1-((2S,4R)-2-(((1R,2S)-1-((cyclopropylsulfonyl)carbamoyl)-2-vinylcyclopropyl)carbamoyl)-4-((7-methoxy-2-phenylquinolin-4-yl)oxy)pyrrolidin-1-yl)-3,3-dimethyl-1-oxobutan-2-yl)carbamate

Conditions
ConditionsYield
With 1-hydroxy-7-aza-benzotriazole; O-(7-azabenzotriazol-1-yl)-N,N,N',N'-tetramethyluronium hexafluorophosphate; N-ethyl-N,N-diisopropylamine In dichloromethane at 20℃; for 16h; Product distribution / selectivity;99%
N-tert-butyloxycarbonyl-L-tert-leucine
62965-35-9

N-tert-butyloxycarbonyl-L-tert-leucine

N-(diphenylmethyl)methylamine
14683-47-7

N-(diphenylmethyl)methylamine

tert-butyl (S)-{1-[benzhydryl(methyl)amino]-3,3-dimethyl-1-oxobutan-2-yl}carbamate
1200405-67-9

tert-butyl (S)-{1-[benzhydryl(methyl)amino]-3,3-dimethyl-1-oxobutan-2-yl}carbamate

Conditions
ConditionsYield
With O-(1H-benzotriazol-1-yl)-N,N,N',N'-tetramethyluronium hexafluorophosphate; N-ethyl-N,N-diisopropylamine In dichloromethane at 20℃; for 72h; Inert atmosphere;99%
With O-(1H-benzotriazol-1-yl)-N,N,N',N'-tetramethyluronium hexafluorophosphate; N-ethyl-N,N-diisopropylamine In dichloromethane at 20℃; for 72h;91%
With O-(1H-benzotriazol-1-yl)-N,N,N',N'-tetramethyluronium hexafluorophosphate; N-ethyl-N,N-diisopropylamine In dichloromethane at 20℃; Inert atmosphere;
N-tert-butyloxycarbonyl-L-tert-leucine
62965-35-9

N-tert-butyloxycarbonyl-L-tert-leucine

(2S,4R)-4-hydroxy-N-{ [4-(4-methyl-1,3-thiazol-5-yl)phenyl]methyl}pyrrolidine-2-carboxamide hydrochloride
1448189-90-9

(2S,4R)-4-hydroxy-N-{ [4-(4-methyl-1,3-thiazol-5-yl)phenyl]methyl}pyrrolidine-2-carboxamide hydrochloride

tert‐butyl N‐[(2S)‐1‐[(2S,4R)‐4‐hydroxy‐2‐({[4‐(4‐methyl‐1,3‐thiazol‐5‐yl)phenyl]methyl}carbamoyl)pyrrolidin‐1‐yl]‐3,3‐dimethyl‐1‐oxobutan‐2‐yl]carbamate
1448189-98-7

tert‐butyl N‐[(2S)‐1‐[(2S,4R)‐4‐hydroxy‐2‐({[4‐(4‐methyl‐1,3‐thiazol‐5‐yl)phenyl]methyl}carbamoyl)pyrrolidin‐1‐yl]‐3,3‐dimethyl‐1‐oxobutan‐2‐yl]carbamate

Conditions
ConditionsYield
With triethylamine; HATU In N,N-dimethyl-formamide at 20℃; for 2h;99%
With N-ethyl-N,N-diisopropylamine; N-[(dimethylamino)-3-oxo-1H-1,2,3-triazolo[4,5-b]pyridin-1-yl-methylene]-N-methylmethanaminium hexafluorophosphate In N,N-dimethyl-formamide at 20℃; for 16h;84.46%
With N-ethyl-N,N-diisopropylamine; N-[(dimethylamino)-3-oxo-1H-1,2,3-triazolo[4,5-b]pyridin-1-yl-methylene]-N-methylmethanaminium hexafluorophosphate In N,N-dimethyl-formamide at 0 - 20℃; for 12h; Inert atmosphere;70%
N-tert-butyloxycarbonyl-L-tert-leucine
62965-35-9

N-tert-butyloxycarbonyl-L-tert-leucine

[(3R,5S)-5-[[4-[4-[[2-[2-(cyclopropylmethylamino)-4-pyridyl]oxazole-4-carbonyl]amino]-3-(difluoromethyl)pyrazol-1-yl]phenyl]methylcarbamoyl]pyrrolidin-3-yl]acetate

[(3R,5S)-5-[[4-[4-[[2-[2-(cyclopropylmethylamino)-4-pyridyl]oxazole-4-carbonyl]amino]-3-(difluoromethyl)pyrazol-1-yl]phenyl]methylcarbamoyl]pyrrolidin-3-yl]acetate

[(3R,5S)-1-[(2S)-2-(tert-butoxycarbonylamino)-3,3-dimethylbutanoyl]-5-[[4-[4-[[2-[2-(cyclopropylmethylamino)-4-pyridyl]oxazole-4-carbonyl] amino]-3-(difluoromethyl)pyrazol-1-yl]phenyl]methylcarbamoyl]pyrrolidin-3-yl]acetate

[(3R,5S)-1-[(2S)-2-(tert-butoxycarbonylamino)-3,3-dimethylbutanoyl]-5-[[4-[4-[[2-[2-(cyclopropylmethylamino)-4-pyridyl]oxazole-4-carbonyl] amino]-3-(difluoromethyl)pyrazol-1-yl]phenyl]methylcarbamoyl]pyrrolidin-3-yl]acetate

Conditions
ConditionsYield
Stage #1: N-tert-butyloxycarbonyl-L-tert-leucine; [(3R,5S)-5-[[4-[4-[[2-[2-(cyclopropylmethylamino)-4-pyridyl]oxazole-4-carbonyl]amino]-3-(difluoromethyl)pyrazol-1-yl]phenyl]methylcarbamoyl]pyrrolidin-3-yl]acetate With N-ethyl-N,N-diisopropylamine In N,N-dimethyl-formamide at 20℃; for 0.5h;
Stage #2: With N-[(dimethylamino)-3-oxo-1H-1,2,3-triazolo[4,5-b]pyridin-1-yl-methylene]-N-methylmethanaminium hexafluorophosphate In N,N-dimethyl-formamide at 20℃; for 0.5h;
99%
N-tert-butyloxycarbonyl-L-tert-leucine
62965-35-9

N-tert-butyloxycarbonyl-L-tert-leucine

benzyl-methyl-amine
103-67-3

benzyl-methyl-amine

tert-butyl (S)-1-(N-benzyl-N-methylcarbamoyl)-2,2-dimethylpropylcarbamate
1032509-62-8

tert-butyl (S)-1-(N-benzyl-N-methylcarbamoyl)-2,2-dimethylpropylcarbamate

Conditions
ConditionsYield
With benzotriazol-1-ol; 1-ethyl-(3-(3-dimethylamino)propyl)-carbodiimide hydrochloride In chloroform at 23℃; for 18h; Inert atmosphere;98%
With benzotriazol-1-ol; 1-ethyl-(3-(3-dimethylamino)propyl)-carbodiimide hydrochloride In chloroform at 23℃; for 18h; Inert atmosphere;98%
With benzotriazol-1-ol; 1-ethyl-(3-(3-dimethylamino)propyl)-carbodiimide hydrochloride; N-ethyl-N,N-diisopropylamine In dichloromethane at 20℃; for 18h;97%
C2HF3O2*C14H21N3O5S
630422-57-0

C2HF3O2*C14H21N3O5S

N-tert-butyloxycarbonyl-L-tert-leucine
62965-35-9

N-tert-butyloxycarbonyl-L-tert-leucine

BOC-NH-(L-tert-BuGly)-[(4R)-hydroxy-S-proline]-(1R,2S-vinyl acca)-CONHSO2-cyclopropane
630419-17-9

BOC-NH-(L-tert-BuGly)-[(4R)-hydroxy-S-proline]-(1R,2S-vinyl acca)-CONHSO2-cyclopropane

Conditions
ConditionsYield
With N-ethyl-N,N-diisopropylamine; HATU In dichloromethane at 20℃; for 48h;98%
N-tert-butyloxycarbonyl-L-tert-leucine
62965-35-9

N-tert-butyloxycarbonyl-L-tert-leucine

(2S,4R)-4-hydroxy-N-(4-(4-methylthiazol-5-yl)benzyl)pyrrolidine-2-carboxamide trifluoroacetic acid

(2S,4R)-4-hydroxy-N-(4-(4-methylthiazol-5-yl)benzyl)pyrrolidine-2-carboxamide trifluoroacetic acid

tert‐butyl N‐[(2S)‐1‐[(2S,4R)‐4‐hydroxy‐2‐({[4‐(4‐methyl‐1,3‐thiazol‐5‐yl)phenyl]methyl}carbamoyl)pyrrolidin‐1‐yl]‐3,3‐dimethyl‐1‐oxobutan‐2‐yl]carbamate
1448189-98-7

tert‐butyl N‐[(2S)‐1‐[(2S,4R)‐4‐hydroxy‐2‐({[4‐(4‐methyl‐1,3‐thiazol‐5‐yl)phenyl]methyl}carbamoyl)pyrrolidin‐1‐yl]‐3,3‐dimethyl‐1‐oxobutan‐2‐yl]carbamate

Conditions
ConditionsYield
Stage #1: N-tert-butyloxycarbonyl-L-tert-leucine; (2S,4R)-4-hydroxy-N-(4-(4-methylthiazol-5-yl)benzyl)pyrrolidine-2-carboxamide trifluoroacetic acid With N-ethyl-N,N-diisopropylamine In N,N-dimethyl-formamide at 20℃; for 0.0833333h;
Stage #2: With N-[(dimethylamino)-3-oxo-1H-1,2,3-triazolo[4,5-b]pyridin-1-yl-methylene]-N-methylmethanaminium hexafluorophosphate In N,N-dimethyl-formamide at 20℃; for 0.5h;
98%
With N-ethyl-N,N-diisopropylamine; N-[(dimethylamino)-3-oxo-1H-1,2,3-triazolo[4,5-b]pyridin-1-yl-methylene]-N-methylmethanaminium hexafluorophosphate In N,N-dimethyl-formamide at 20℃; for 0.5h;98%
N-tert-butyloxycarbonyl-L-tert-leucine
62965-35-9

N-tert-butyloxycarbonyl-L-tert-leucine

(S)-7-nitro-N-((R)-1,2,3,4-tetrahydronaphthalen-1-yl)-1,2,3,4-tetrahydroisoquinoline-3-carboxamide

(S)-7-nitro-N-((R)-1,2,3,4-tetrahydronaphthalen-1-yl)-1,2,3,4-tetrahydroisoquinoline-3-carboxamide

tert-butyl ((S)-3,3-dimethyl-1-((S)-7-nitro-3-(((R)-1,2,3,4-tetrahydronaphthalen-1-yl)carbamoyl)-3,4-dihydroisoquinolin-2(1H)-yl)-1-oxobutan-2-yl)carbamate

tert-butyl ((S)-3,3-dimethyl-1-((S)-7-nitro-3-(((R)-1,2,3,4-tetrahydronaphthalen-1-yl)carbamoyl)-3,4-dihydroisoquinolin-2(1H)-yl)-1-oxobutan-2-yl)carbamate

Conditions
ConditionsYield
With 1-hydroxy-7-aza-benzotriazole; 1-ethyl-(3-(3-dimethylamino)propyl)-carbodiimide hydrochloride; N-ethyl-N,N-diisopropylamine In N,N-dimethyl-formamide at 20℃;98%
N-tert-butyloxycarbonyl-L-tert-leucine
62965-35-9

N-tert-butyloxycarbonyl-L-tert-leucine

4-fluoro-2-methoxyaniline
450-91-9

4-fluoro-2-methoxyaniline

tert-butyl (S)-(1-((4-fluoro-2-methoxyphenyl)amino)-3,3-dimethyl-1-oxobutan-2-yl)carbamate

tert-butyl (S)-(1-((4-fluoro-2-methoxyphenyl)amino)-3,3-dimethyl-1-oxobutan-2-yl)carbamate

Conditions
ConditionsYield
With triethylamine; N-[(dimethylamino)-3-oxo-1H-1,2,3-triazolo[4,5-b]pyridin-1-yl-methylene]-N-methylmethanaminium hexafluorophosphate In dichloromethane at 0 - 20℃; for 12h; Inert atmosphere;98%
N-tert-butyloxycarbonyl-L-tert-leucine
62965-35-9

N-tert-butyloxycarbonyl-L-tert-leucine

isobutyl chloroformate
543-27-1

isobutyl chloroformate

(S)-tert-butyl (1-amino-3,3-dimethyl-1-oxobutan-2-yl)carbamate
372199-21-8

(S)-tert-butyl (1-amino-3,3-dimethyl-1-oxobutan-2-yl)carbamate

Conditions
ConditionsYield
Stage #1: N-tert-butyloxycarbonyl-L-tert-leucine; isobutyl chloroformate at 0℃; for 0.5h;
Stage #2: With ammonium hydroxide In water at 20℃; for 1.5h;
98%
N-tert-butyloxycarbonyl-L-tert-leucine
62965-35-9

N-tert-butyloxycarbonyl-L-tert-leucine

L-tert-Leucine
20859-02-3

L-tert-Leucine

Conditions
ConditionsYield
With hydrogenchloride In 1,4-dioxane97%
Stage #1: N-tert-butyloxycarbonyl-L-tert-leucine With methanesulfonic acid In dichloromethane at 25℃; for 3h;
Stage #2: With triethylamine In dichloromethane at 25℃; for 1h;
75%
With hydrogenchloride In water; toluene at 60℃; for 3h;

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