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Hangzhou Dingyan Chem Co., Ltd

Items Standard Result Assay 98%min ----------------------------------------------------------------------------------------------

High purity Various Specifications (S)-3-Phenyl-2-[(Pyrazin-2-Ylcarbonyl)Amino] Propanoic Acid CAS:114457-94-2

Cas:114457-94-2

Min.Order:1 Gram

FOB Price: $100.0 / 500.0

Type:Manufacturers

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Hangzhou Think Chemical Co. Ltd

Bortezomib Intermediate N-(2-Pyrazinylcarbonyl)-L-phenylalanine[CAS:114457-94-2] Identification Name N-(2-Pyrazinylcarbonyl)-L-phenylalanine Molecular Structure Molecular F

Good supply N-(2-Pyrazinylcarbonyl)-L-phenylalanine

Cas:114457-94-2

Min.Order:1 Kilogram

Negotiable

Type:Other

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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

(S)-3-PHENYL-2-[(PYRAZIN-2-YLCARBONYL)AMINO] PROPANOIC ACID

Cas:114457-94-2

Min.Order:1 Kilogram

FOB Price: $5.0

Type:Manufacturers

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Dayang Chem (Hangzhou) Co.,Ltd.

DayangChem exported this product to many countries and regions at best price in China. If you are looking for the product’s supplier in China, DayangChem is your best choice. Pls contact with us freely for getting detailed product specifica

N-(2-Pyrazinylcarbonyl)-L-phenylalanine

Cas:114457-94-2

Min.Order:1 Kilogram

FOB Price: $2.0

Type:Lab/Research institutions

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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

(S)-3-Phenyl-2-[(pyrazin-2-ylcarbonyl)-amino]-propanoic acid

Cas:114457-94-2

Min.Order:5 Kiloliter

FOB Price: $1.2 / 5.0

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 on.O

high quality (S)-3-PHENYL-2-[(PYRAZIN-2-YLCARBONYL)AMINO] PROPANOIC ACID

Cas:114457-94-2

Min.Order:1 Kilogram

FOB Price: $1.0

Type:Lab/Research institutions

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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.

(S)-3-PHENYL-2-[(PYRAZIN-2-YLCARBONYL)AMINO] PROPANOIC ACID

Cas:114457-94-2

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

Pharmaceutical Intermediate CAS 114457-94-2 (S) -3-Phenyl-2- (pyrazine-2-carboxamido) Propanoic Acid

Cas:114457-94-2

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 114457-94-2 with best quality

Cas:114457-94-2

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 We can also provide MT1 peptide powd

(S)-3-PHENYL-2-[(PYRAZIN-2-YLCARBONYL)AMINO] PROPANOIC ACID

Cas:114457-94-2

Min.Order:1 Kilogram

FOB Price: $100.0 / 102.0

Type:Trading Company

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Hubei Langyou International Trading Co., Ltd

Advantages: Hubei XinRunde Chemical Co., Ltd is a renowned pharmaceutical manufacturer. We can offer high quality products at competitive price in quick delivery with 100% custom pass guaranteed. Never stop striving to offer our best service is

N-Pyrazinylcarbonyl-L-phenylalanine CAS NO 114457-94-2

Cas:114457-94-2

Min.Order:1 Kilogram

Negotiable

Type:Other

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Shanghai Upbio Tech Co.,Ltd

1,In No Less five years exporting experience. 2.Lower Price with higher quality 3,Free sample 4,We are sincerely responsible for the "product quality" and "After Service" Appearance:White powder Storage:storage in a dr

Hotsale (S)-3-Phenyl-2-[(Pyrazin-2-Ylcarbonyl)Amino] Propanoic Acid CAS:114457-94-2

Cas:114457-94-2

Min.Order:1 Gram

FOB Price: $9.0

Type:Lab/Research institutions

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Shanghai Minstar Chemical Co., Ltd

Product Name: (S)-3-PHENYL-2-[(PYRAZIN-2-YLCARBONYL)AMINO] PROPANOIC ACID CAS: 114457-94-2 MF: C14H13N3O3 MW: 271.27 EINECS: Mol File: 114457-94-2.mol (S)-3-PHENYL-2-[(PYRAZIN-2-YLCARBONYL)AMINO] PROPANOIC ACID Structure (S)-3-PH

(S)-3-PHENYL-2-[(PYRAZIN-2-YLCARBONYL)AMINO] PROPANOIC ACID

Cas:114457-94-2

Min.Order:1 Gram

Negotiable

Type:Lab/Research institutions

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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 present

(S)-3-PHENYL-2-[(PYRAZIN-2-YLCARBONYL)AMINO] PROPANOIC ACID

Cas:114457-94-2

Min.Order:1 Kilogram

FOB Price: $25.0 / 30.0

Type:Trading Company

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Qingdao Beluga Import and Export Co., LTD

(S)-3-PHENYL-2-[(PYRAZIN-2-YLCARBONYL)AMINO] PROPANOIC ACID CAS:114457-94-2 Qingdao Belugas Import and Export Co., Ltd. is a scientific and technological company integrating research and development, production and trade of chemical intermediates, s

(S)-3-PHENYL-2-[(PYRAZIN-2-YLCARBONYL)AMINO] PROPANOIC ACID CAS:114457-94-2

Cas:114457-94-2

Min.Order:1 Gram

Negotiable

Type:Lab/Research institutions

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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-(2-Pyrazinylcarbonyl)-L-phenylalanine

Cas:114457-94-2

Min.Order:1 Kilogram

Negotiable

Type:Lab/Research institutions

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Lonwin Chemical Group Limited

N-(2-Pyrazinylcarbonyl)-L-phenylalanine China CAS: 114457-94-2 Specification Appearance White to off-white powder Assay 98~102% 100.1% Melting Point 175~18

Factory supply N-(2-Pyrazinylcarbonyl)-L-phenylalanine China

Cas:114457-94-2

Min.Order:1 Kilogram

Negotiable

Type:Other

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Guangdong Juda Chemical Industrial Co.,Limited

We provide tailor-made photoinitiator solutions for different performances by custom synthesisi.blends or other technical supports low-odor uv formulations non-yellowing uv formulations benzene-free uv formulations polymeric uv formul

Bortezomib Intermediate 2 CAS 114457-94-2 with low price

Cas:114457-94-2

Min.Order:100 Kilogram

Negotiable

Type:Trading Company

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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

N-(2-Pyrazinylcarbonyl)-L-phenylalanine

Cas:114457-94-2

Min.Order:0

Negotiable

Type:Lab/Research institutions

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Hangzhou Fandachem Co.,Ltd

FandaChem,a China-based chemical company, specialize in exporting N-(2-Pyrazinylcarbonyl)-L-phenylalanine ,S)-3-PHENYL-2-[(PYRAZIN-2-YLCARBONYL)AMINO] PROPANOIC ACID,Bortezomib intermediate,cas 114457-94-2 Please contact us by email freely. Appe

Triumph International Development Limilted

L Package:As customer request Application:Used for research and industrial manufacture. Transportation:Common products:Sea/Air/Courier Dangerous Chem:Sea/Air Port:Qingdao/Shanghai,China

(S)-3-Phenyl-2-[(Pyrazin-2-Ylcarbonyl)Amino] Propanoic Acid

Cas:114457-94-2

Min.Order:100 Metric Ton

Negotiable

Type:Lab/Research institutions

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Afine Chemicals Limited

Company Introduction 1. Established in 2005, with two independent business divisions: Fine chemicals division; Pharmaceutical division. 2. Main product: Optical brightener Textile auxiliary Dye stuff Pigments

114457-94-2

Cas:114457-94-2

Min.Order:1 Gram

Negotiable

Type:Lab/Research institutions

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SHANGHAI T&W PHARMACEUTICAL CO., LTD.

A substitute for perfluorooctanoic acid, mainly used as a surfactant, dispersant, additive, etc Appearance:White solid or Colorless liquid Purity:99.3 % We will ship the goods in a timely manner as required We can provide relevant documents acc

(S)-3-Phenyl-2-(pyrazine-2-carboxamido)propanoic acid

Cas:114457-94-2

Min.Order:4 Kilogram

Negotiable

Type:Lab/Research institutions

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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-(2-Pyrazinylcarbonyl)-L-phenylalanine

Cas:114457-94-2

Min.Order:0

Negotiable

Type:Lab/Research institutions

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Shanghai Massive Chemical Technology Co., Ltd.

Massive Chemical is certified with ISO9001 and ISO14001 manufacturer for this product. We will offer all documents as requirement for the materials which includes, Certificate of Analysis, Material Safety Data Sheet, and Method of Analysis and

(S)-3-PHENYL-2-[(PYRAZIN-2-YLCARBONYL)AMINO] PROPANOIC ACID

Cas:114457-94-2

Min.Order:1 Gram

FOB Price: $1.0

Type:Lab/Research institutions

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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

High purity Various Specifications (S)-3-Phenyl-2-[(Pyrazin-2-Ylcarbonyl)Amino] Propanoic Acid

Cas:114457-94-2

Min.Order:10 Gram

FOB Price: $100.0

Type:Lab/Research institutions

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HANGZHOU YUNUO CHEMICAL CO.,LTD

Superior quality, moderate price & quick delivery. Appearance:white crystalline powder Storage:Stored in cool, dry and ventilation place; Away from fire and heat Package:10g/bag,or as your request Application:For medicine , pesticide interm

N-(2-Pyrazinylcarbonyl)-L-phenylalanine

Cas:114457-94-2

Min.Order:1 Gram

Negotiable

Type:Trading Company

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Jinan Finer Chemical Co., Ltd

Product Description Product website: http://www.finerchem.com/pro01en/id/246.html Product Name N-(2-Pyrazinylcarbonyl)-L-phenylalanine

N-(2-Pyrazinylcarbonyl)-L-phenylalanine

Cas:114457-94-2

Min.Order:1 Gram

FOB Price: $34.0

Type:Lab/Research institutions

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Zibo Dorne chemical technology co. LTD

Product Details Grade: pharmaceutical grade Purity:99%+ ProductionCapacity: 1000 Kilogram/Month Scope of use: For scientific research only(The product must be used legally) Our Advantage 1. Best quality with competitive price. 2. Quick shipping,

(S)-3-PHENYL-2-[(PYRAZIN-2-YLCARBONYL)AMINO] PROPANOIC ACID

Cas:114457-94-2

Min.Order:1 Gram

Negotiable

Type:Lab/Research institutions

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Hangzhou Huarong Pharm Co., Ltd.

Hangzhou Huarong Pharm Co., Ltd.established since 2006 , has been actively developing specialty products for Finished Dosages, APIs, Intermediates, and Fine chemicals markets in North America, Europe, Korea, Japan, Mid-East and all over the World. Hu

(S)-3-PHENYL-2-[(PYRAZIN-2-YLCARBONYL)AMINO] PROPANOIC ACID

Cas:114457-94-2

Min.Order:0

Negotiable

Type:Trading Company

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Synthetic route

(pyrazine-2-carbonyl)-L-phenylalanine ethyl ester

(pyrazine-2-carbonyl)-L-phenylalanine ethyl ester

(S)-3-phenyl-2-[(pyrazine-2-carbonyl)amino]propanoic acid
114457-94-2

(S)-3-phenyl-2-[(pyrazine-2-carbonyl)amino]propanoic acid

Conditions
ConditionsYield
With sodium hydroxide In water; acetone at 0℃; for 2h;99%
L-phenylalanine
63-91-2

L-phenylalanine

(1H-benzo[d][1,2,3]triazol-1-yl)(pyrazin-2-yl)methanone
306990-94-3

(1H-benzo[d][1,2,3]triazol-1-yl)(pyrazin-2-yl)methanone

(S)-3-phenyl-2-[(pyrazine-2-carbonyl)amino]propanoic acid
114457-94-2

(S)-3-phenyl-2-[(pyrazine-2-carbonyl)amino]propanoic acid

Conditions
ConditionsYield
With trialkylamine In water; acetonitrile at 20℃;98%
N,O-bis(trimethylsilyl)phenylalanine
7364-51-4

N,O-bis(trimethylsilyl)phenylalanine

pyrazinecarboxylic acid imidazolide
103435-88-7

pyrazinecarboxylic acid imidazolide

(S)-3-phenyl-2-[(pyrazine-2-carbonyl)amino]propanoic acid
114457-94-2

(S)-3-phenyl-2-[(pyrazine-2-carbonyl)amino]propanoic acid

Conditions
ConditionsYield
Stage #1: N,O-bis(trimethylsilyl)phenylalanine; pyrazinecarboxylic acid imidazolide In dichloromethane at -40 - 20℃; for 19.5h;
Stage #2: With water; citric acid In dichloromethane
97%
In dichloromethane at -40 - 20℃; for 16.5h;0.96 g
C18H21N3O3

C18H21N3O3

(S)-3-phenyl-2-[(pyrazine-2-carbonyl)amino]propanoic acid
114457-94-2

(S)-3-phenyl-2-[(pyrazine-2-carbonyl)amino]propanoic acid

Conditions
ConditionsYield
With trifluoroacetic acid In dichloromethane at 20℃; for 2h;96%
N-(2-pyrazinylcarbonyl)-L-phenylalanine methyl ester
73058-37-4

N-(2-pyrazinylcarbonyl)-L-phenylalanine methyl ester

(S)-3-phenyl-2-[(pyrazine-2-carbonyl)amino]propanoic acid
114457-94-2

(S)-3-phenyl-2-[(pyrazine-2-carbonyl)amino]propanoic acid

Conditions
ConditionsYield
With sodium hydroxide In acetone pH=12 - Ca. 13; Cooling with ice;93.6%
With lithium hydroxide In tetrahydrofuran; water at 0℃; for 1h;93%
With sodium hydroxide In 1,4-dioxane; methanol for 1h;69%
Phe-Wang resin

Phe-Wang resin

diphenylmethylsilanecarboxylic acid
18414-58-9

diphenylmethylsilanecarboxylic acid

2-iodopyrazine
32111-21-0

2-iodopyrazine

(S)-3-phenyl-2-[(pyrazine-2-carbonyl)amino]propanoic acid
114457-94-2

(S)-3-phenyl-2-[(pyrazine-2-carbonyl)amino]propanoic acid

Conditions
ConditionsYield
Stage #1: Phe-Wang resin; diphenylmethylsilanecarboxylic acid; 2-iodopyrazine With potassium fluoride; C39H32OP2*C13H12N(1-)*Pd(2+)*CH3O3S(1-); triethylamine In N,N-dimethyl-formamide at 20℃; for 15h; wang polystyrene resin; Sealed tube; Inert atmosphere;
Stage #2: With triethylsilane; trifluoroacetic acid In water at 20℃; for 2h; Sealed tube; Inert atmosphere;
82%
pyrazinoyl chloride
19847-10-0

pyrazinoyl chloride

L-phenylalanine
63-91-2

L-phenylalanine

(S)-3-phenyl-2-[(pyrazine-2-carbonyl)amino]propanoic acid
114457-94-2

(S)-3-phenyl-2-[(pyrazine-2-carbonyl)amino]propanoic acid

Conditions
ConditionsYield
Stage #1: pyrazinoyl chloride; L-phenylalanine With sodium carbonate In water; toluene at 10 - 25℃; for 3h;
Stage #2: With hydrogenchloride In methanol; water at 15 - 20℃; pH=3;
36%
With sodium carbonate In water; toluene at 10 - 25℃;36%
velcade
179324-69-7

velcade

A

Pyrazine-2-carboxylic acid ((S)-1-carbamoyl-2-phenyl-ethyl)-amide

Pyrazine-2-carboxylic acid ((S)-1-carbamoyl-2-phenyl-ethyl)-amide

B

(S)-3-phenyl-2-[(pyrazine-2-carbonyl)amino]propanoic acid
114457-94-2

(S)-3-phenyl-2-[(pyrazine-2-carbonyl)amino]propanoic acid

Conditions
ConditionsYield
With sodium hydroxide; oxygen In dimethyl sulfoxide at 70℃; for 250h; pH=12.0; Kinetics; Product distribution; Oxidation; hydrolysis;
With sodium hydroxide; oxygen at 70℃; for 48h; pH=12; Oxidation; hydrolysis;
velcade
179324-69-7

velcade

A

Pyrazine-2-carboxylic acid ((S)-1-carbamoyl-2-phenyl-ethyl)-amide

Pyrazine-2-carboxylic acid ((S)-1-carbamoyl-2-phenyl-ethyl)-amide

B

(S)-3-phenyl-2-[(pyrazine-2-carbonyl)amino]propanoic acid
114457-94-2

(S)-3-phenyl-2-[(pyrazine-2-carbonyl)amino]propanoic acid

C

Pyrazine-2-carboxylic acid [(S)-1-((R)-1-hydroxy-3-methyl-butylcarbamoyl)-2-phenyl-ethyl]-amide
289472-78-2

Pyrazine-2-carboxylic acid [(S)-1-((R)-1-hydroxy-3-methyl-butylcarbamoyl)-2-phenyl-ethyl]-amide

D

Pyrazine-2-carboxylic acid [(S)-1-((S)-1-hydroxy-3-methyl-butylcarbamoyl)-2-phenyl-ethyl]-amide

Pyrazine-2-carboxylic acid [(S)-1-((S)-1-hydroxy-3-methyl-butylcarbamoyl)-2-phenyl-ethyl]-amide

Conditions
ConditionsYield
With dihydrogen peroxide In water at 20℃; for 1h; Kinetics; Product distribution; Further Variations:; Solvents; Oxidation; hydrolysis;
velcade
179324-69-7

velcade

(S)-3-phenyl-2-[(pyrazine-2-carbonyl)amino]propanoic acid
114457-94-2

(S)-3-phenyl-2-[(pyrazine-2-carbonyl)amino]propanoic acid

Conditions
ConditionsYield
With hydrogenchloride; oxygen In dimethyl sulfoxide at 70℃; for 250h; pH=1.0; Kinetics; Product distribution; Oxidation; hydrolysis;
With hydrogenchloride; oxygen at 70℃; for 120h; pH=1.0; Oxidation; hydrolysis;
2-pyrazylcarboxylic acid
98-97-5

2-pyrazylcarboxylic acid

(S)-3-phenyl-2-[(pyrazine-2-carbonyl)amino]propanoic acid
114457-94-2

(S)-3-phenyl-2-[(pyrazine-2-carbonyl)amino]propanoic acid

Conditions
ConditionsYield
Multi-step reaction with 2 steps
1.1: BOP; DiPEA / dimethylformamide / 0.25 h
1.2: 70 percent / dimethylformamide / 1 h
2.1: 69 percent / aq. NaOH / dioxane; methanol / 1 h
View Scheme
Multi-step reaction with 2 steps
1: benzotriazol-1-ol; 1-ethyl-(3-(3-dimethylamino)propyl)-carbodiimide hydrochloride; N-ethyl-N,N-diisopropylamine / N,N-dimethyl-formamide / 0 - 20 °C / Inert atmosphere
2: lithium hydroxide / tetrahydrofuran; water / 3 h / 0 °C
View Scheme
Multi-step reaction with 2 steps
1.1: 2,4,6-tripropyl-1,3,5,2,4,6-trioxatriphosphinane-2,4,6-trioxide; 4-methyl-morpholine / dichloromethane; acetonitrile / 5 h / -15 - 25 °C
2.1: triethylamine; water; lithium bromide / acetonitrile / 5.17 h / 0 - 20 °C
2.2: 0 - 2 °C / pH 3 - 4
View Scheme
methyl (2S)-2-amino-3-phenylpropanoate hydrochloride
7524-50-7

methyl (2S)-2-amino-3-phenylpropanoate hydrochloride

(S)-3-phenyl-2-[(pyrazine-2-carbonyl)amino]propanoic acid
114457-94-2

(S)-3-phenyl-2-[(pyrazine-2-carbonyl)amino]propanoic acid

Conditions
ConditionsYield
Multi-step reaction with 2 steps
1.1: BOP; DiPEA / dimethylformamide / 0.25 h
1.2: 70 percent / dimethylformamide / 1 h
2.1: 69 percent / aq. NaOH / dioxane; methanol / 1 h
View Scheme
Multi-step reaction with 2 steps
1.1: 2,4,6-tripropyl-1,3,5,2,4,6-trioxatriphosphinane-2,4,6-trioxide; 4-methyl-morpholine / dichloromethane; acetonitrile / 5 h / -15 - 25 °C
2.1: triethylamine; water; lithium bromide / acetonitrile / 5.17 h / 0 - 20 °C
2.2: 0 - 2 °C / pH 3 - 4
View Scheme
Multi-step reaction with 2 steps
1: O-(benzotriazol-1-yl)-N,N,N',N'-tetramethyluronium tetrafluoroborate; N-ethyl-N,N-diisopropylamine / dichloromethane / 4 h / -15 - 20 °C
2: lithium hydroxide; water / tetrahydrofuran / 2 h / 0 - 20 °C
View Scheme
Multi-step reaction with 2 steps
1: benzotriazol-1-ol; 1-ethyl-(3-(3-dimethylamino)propyl)-carbodiimide hydrochloride / dichloromethane
2: lithium hydroxide monohydrate / methanol / 14 h / 20 °C
View Scheme
Multi-step reaction with 2 steps
1.1: dicyclohexyl-carbodiimide; benzotriazol-1-ol / tetrahydrofuran / 0.67 h / 0 °C
1.2: 12 h
2.1: lithium hydroxide / tetrahydrofuran; water / 1 h / 0 °C
View Scheme
2-pyrazylcarboxylic acid
98-97-5

2-pyrazylcarboxylic acid

L-phenylalanine sodium salt
16480-57-2

L-phenylalanine sodium salt

(S)-3-phenyl-2-[(pyrazine-2-carbonyl)amino]propanoic acid
114457-94-2

(S)-3-phenyl-2-[(pyrazine-2-carbonyl)amino]propanoic acid

Conditions
ConditionsYield
Stage #1: 2-pyrazylcarboxylic acid With chloroformic acid ethyl ester; triethylamine In acetone at -5 - 30℃; for 3.5h;
Stage #2: L-phenylalanine sodium salt In water; acetone at 0 - 30℃; for 18h; Product distribution / selectivity;
methyl (2S)-2-amino-3-phenylpropanoate
2577-90-4

methyl (2S)-2-amino-3-phenylpropanoate

(S)-3-phenyl-2-[(pyrazine-2-carbonyl)amino]propanoic acid
114457-94-2

(S)-3-phenyl-2-[(pyrazine-2-carbonyl)amino]propanoic acid

Conditions
ConditionsYield
Multi-step reaction with 2 steps
1: benzotriazol-1-ol; 1-ethyl-(3-(3-dimethylamino)propyl)-carbodiimide hydrochloride; N-ethyl-N,N-diisopropylamine / N,N-dimethyl-formamide / 0 - 20 °C / Inert atmosphere
2: lithium hydroxide / tetrahydrofuran; water / 3 h / 0 °C
View Scheme
Multi-step reaction with 2 steps
1: 1-ethyl-(3-(3-dimethylamino)propyl)-carbodiimide hydrochloride; benzotriazol-1-ol; 4-methyl-morpholine / N,N-dimethyl-formamide / 20 °C
2: lithium hydroxide / tetrahydrofuran / 2 h / 20 °C
View Scheme
Multi-step reaction with 2 steps
1: triethylamine; N-[(dimethylamino)-3-oxo-1H-1,2,3-triazolo[4,5-b]pyridin-1-yl-methylene]-N-methylmethanaminium hexafluorophosphate / dichloromethane / 20 °C
2: sodium hydroxide / methanol; water / 20 °C
View Scheme
L-phenylalanine
63-91-2

L-phenylalanine

(S)-3-phenyl-2-[(pyrazine-2-carbonyl)amino]propanoic acid
114457-94-2

(S)-3-phenyl-2-[(pyrazine-2-carbonyl)amino]propanoic acid

Conditions
ConditionsYield
Multi-step reaction with 2 steps
1: dichloromethane / 16 h / 20 °C
2: dichloromethane / 16.5 h / -40 - 20 °C
View Scheme
Multi-step reaction with 3 steps
1: thionyl chloride
2: N-ethyl-N,N-diisopropylamine; O-(benzotriazol-1-yl)-N,N,N',N'-tetramethyluronium tetrafluoroborate / dichloromethane / -15 - 10 °C
3: sodium hydroxide / water
View Scheme
L-phenylalanine tert-butyl ester hydrochloride
15100-75-1

L-phenylalanine tert-butyl ester hydrochloride

(S)-3-phenyl-2-[(pyrazine-2-carbonyl)amino]propanoic acid
114457-94-2

(S)-3-phenyl-2-[(pyrazine-2-carbonyl)amino]propanoic acid

Conditions
ConditionsYield
Multi-step reaction with 2 steps
1.1: N,N-dimethyl-formamide / 0.08 h / 20 °C
1.2: 18 h / 20 °C
2.1: trifluoroacetic acid / dichloromethane / 2 h / 20 °C
View Scheme
C17H19N3O3

C17H19N3O3

(S)-3-phenyl-2-[(pyrazine-2-carbonyl)amino]propanoic acid
114457-94-2

(S)-3-phenyl-2-[(pyrazine-2-carbonyl)amino]propanoic acid

Conditions
ConditionsYield
Stage #1: C17H19N3O3 With sodium hydroxide In water
Stage #2: With hydrogenchloride In water
2-amino-3-phenyl-propionic acid isopropyl ester
18934-70-8

2-amino-3-phenyl-propionic acid isopropyl ester

(S)-3-phenyl-2-[(pyrazine-2-carbonyl)amino]propanoic acid
114457-94-2

(S)-3-phenyl-2-[(pyrazine-2-carbonyl)amino]propanoic acid

Conditions
ConditionsYield
Multi-step reaction with 2 steps
1: N-ethyl-N,N-diisopropylamine; O-(benzotriazol-1-yl)-N,N,N',N'-tetramethyluronium tetrafluoroborate / dichloromethane / -15 - 10 °C
2: sodium hydroxide / water
View Scheme
methyl (2S)-2-amino-3-phenylpropanoate hydrochloride
7524-50-7

methyl (2S)-2-amino-3-phenylpropanoate hydrochloride

(S)-3-phenyl-2-[(pyrazine-2-carbonyl)amino]propanoic acid
114457-94-2

(S)-3-phenyl-2-[(pyrazine-2-carbonyl)amino]propanoic acid

(S)-methyl 3-phenyl-2-((S)-3-phenyl-2-(pyrazine-2-carboxamido)propanamido)-propanoate
1194235-01-2

(S)-methyl 3-phenyl-2-((S)-3-phenyl-2-(pyrazine-2-carboxamido)propanamido)-propanoate

Conditions
ConditionsYield
With 4-methyl-morpholine; hydrogenchloride; benzotriazol-1-ol; dicyclohexyl-carbodiimide In tetrahydrofuran at 0℃; for 2h; pH=12 - Ca. 13;95.6%
Stage #1: (S)-3-phenyl-2[(pyrazine-2-carbonyl)-amino]propionic acid With benzotriazol-1-ol; dicyclohexyl-carbodiimide In tetrahydrofuran at 0℃; for 0.666667h;
Stage #2: methyl (2S)-2-amino-3-phenylpropanoate hydrochloride With 4-methyl-morpholine In tetrahydrofuran for 12h;
81%
With benzotriazol-1-ol; dicyclohexyl-carbodiimide In tetrahydrofuran at 0℃;
(aR,3aS,4S,6S,7aR)-hexahydro-3a,8,8-trimethyl-α-(2-methylpropyl)-4,6-methano-1,3,2-benzodioxaborole-2-methanamine 2,2,2-trifluoroacetate

(aR,3aS,4S,6S,7aR)-hexahydro-3a,8,8-trimethyl-α-(2-methylpropyl)-4,6-methano-1,3,2-benzodioxaborole-2-methanamine 2,2,2-trifluoroacetate

(S)-3-phenyl-2-[(pyrazine-2-carbonyl)amino]propanoic acid
114457-94-2

(S)-3-phenyl-2-[(pyrazine-2-carbonyl)amino]propanoic acid

(1S,2S,3R,5S)-pinanediol N-(2-pyrazinecarbonyl)-L-phenylalanine-L-leucine boronate

(1S,2S,3R,5S)-pinanediol N-(2-pyrazinecarbonyl)-L-phenylalanine-L-leucine boronate

Conditions
ConditionsYield
Stage #1: (aR,3aS,4S,6S,7aR)-hexahydro-3a,8,8-trimethyl-α-(2-methylpropyl)-4,6-methano-1,3,2-benzodioxaborole-2-methanamine 2,2,2-trifluoroacetate With 1-hydroxy-pyrrolidine-2,5-dione; dicyclohexyl-carbodiimide In DMF (N,N-dimethyl-formamide) at -5 - 0℃; for 1h;
Stage #2: (S)-3-phenyl-2[(pyrazine-2-carbonyl)-amino]propionic acid With 4-methyl-morpholine In DMF (N,N-dimethyl-formamide) at 0℃; pH=7;
95.5%
(R)-1-amino-3-methylbutane-1-boronic acid-1-(neopentyl glycol) ester hydrochloride

(R)-1-amino-3-methylbutane-1-boronic acid-1-(neopentyl glycol) ester hydrochloride

(S)-3-phenyl-2-[(pyrazine-2-carbonyl)amino]propanoic acid
114457-94-2

(S)-3-phenyl-2-[(pyrazine-2-carbonyl)amino]propanoic acid

C24H33BN4O4

C24H33BN4O4

Conditions
ConditionsYield
With 2-(3H-[1,2,3]triazolo[4,5-b]pyridin-3-yl)-1,1,3,3-tetramethylisouronium hexafluorophosphate; N-ethyl-N,N-diisopropylamine In dichloromethane; tert-butyl methyl ether at 0 - 20℃; for 12h; Reagent/catalyst; Solvent; Temperature; Large scale;93%
(R)-1-amino-3-methylbutane-1-boronic acid-1-(2-methyl-2,4-pentanediol) ester hydrochloride

(R)-1-amino-3-methylbutane-1-boronic acid-1-(2-methyl-2,4-pentanediol) ester hydrochloride

(S)-3-phenyl-2-[(pyrazine-2-carbonyl)amino]propanoic acid
114457-94-2

(S)-3-phenyl-2-[(pyrazine-2-carbonyl)amino]propanoic acid

C25H35BN4O4

C25H35BN4O4

Conditions
ConditionsYield
With O-(1H-benzotriazol-1-yl)-N,N,N',N'-tetramethyluronium hexafluorophosphate; N-ethyl-N,N-diisopropylamine In dichloromethane at 0℃; for 24h; Large scale;93%
(R)-1-amino-3-methylbutane-1-boronic acid-1-(2,4-dimethyl-2,4-pentanediol) hydrochloride

(R)-1-amino-3-methylbutane-1-boronic acid-1-(2,4-dimethyl-2,4-pentanediol) hydrochloride

(S)-3-phenyl-2-[(pyrazine-2-carbonyl)amino]propanoic acid
114457-94-2

(S)-3-phenyl-2-[(pyrazine-2-carbonyl)amino]propanoic acid

C26H37BN4O4

C26H37BN4O4

Conditions
ConditionsYield
With benzotriazol-1-ol; 1-ethyl-(3-(3-dimethylamino)propyl)-carbodiimide hydrochloride; N-ethyl-N,N-diisopropylamine In hexane; dichloromethane at 0 - 20℃; for 12h; Large scale;93%
1-amino-3-methylbutane
107-85-7

1-amino-3-methylbutane

(S)-3-phenyl-2-[(pyrazine-2-carbonyl)amino]propanoic acid
114457-94-2

(S)-3-phenyl-2-[(pyrazine-2-carbonyl)amino]propanoic acid

(S)-N-(1-(isopentylamino)-1-oxo-3-phenylpropan-2-yl)pyrazine-2-carboxamide

(S)-N-(1-(isopentylamino)-1-oxo-3-phenylpropan-2-yl)pyrazine-2-carboxamide

Conditions
ConditionsYield
With dmap; 1-ethyl-(3-(3-dimethylamino)propyl)-carbodiimide hydrochloride; triethylamine In dichloromethane at 0 - 20℃; for 18h; Inert atmosphere;91%
With 6,6'-diselanediylbis(N-(2-(dimethylamino)ethyl)-N-methyl-3-nitrobenzamide); triethyl phosphite In acetonitrile at 50℃; for 16h; Molecular sieve;78%
1,2,3-Benzotriazole
95-14-7

1,2,3-Benzotriazole

(S)-3-phenyl-2-[(pyrazine-2-carbonyl)amino]propanoic acid
114457-94-2

(S)-3-phenyl-2-[(pyrazine-2-carbonyl)amino]propanoic acid

(S)-N-(1-(1H-benzo[d][1,2,3]triazol-1-yl)-1-oxo-3-phenylpropan-2-yl)pyrazine-2-carboxamide

(S)-N-(1-(1H-benzo[d][1,2,3]triazol-1-yl)-1-oxo-3-phenylpropan-2-yl)pyrazine-2-carboxamide

Conditions
ConditionsYield
Stage #1: 1,2,3-Benzotriazole With thionyl chloride In dichloromethane for 0.5h;
Stage #2: (S)-3-phenyl-2[(pyrazine-2-carbonyl)-amino]propionic acid In dichloromethane at -15℃;
90%
(S)-3-phenyl-2-[(pyrazine-2-carbonyl)amino]propanoic acid
114457-94-2

(S)-3-phenyl-2-[(pyrazine-2-carbonyl)amino]propanoic acid

Pyrazine-2-carboxylic acid ((S)-1-carbamoyl-2-phenyl-ethyl)-amide

Pyrazine-2-carboxylic acid ((S)-1-carbamoyl-2-phenyl-ethyl)-amide

Conditions
ConditionsYield
Stage #1: (S)-3-phenyl-2[(pyrazine-2-carbonyl)-amino]propionic acid With triethylamine; 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;
Stage #2: With ammonium chloride In N,N-dimethyl-formamide at 20℃; for 12h; Reagent/catalyst; Solvent;
88.3%
(R)-3-methyl-1-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)butan-1-amine hydrochloride

(R)-3-methyl-1-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)butan-1-amine hydrochloride

(S)-3-phenyl-2-[(pyrazine-2-carbonyl)amino]propanoic acid
114457-94-2

(S)-3-phenyl-2-[(pyrazine-2-carbonyl)amino]propanoic acid

bortezomib pinacol ester
1029701-48-1

bortezomib pinacol ester

Conditions
ConditionsYield
With 2-(3H-[1,2,3]triazolo[4,5-b]pyridin-3-yl)-1,1,3,3-tetramethylisouronium hexafluorophosphate; triethylamine In dichloromethane; ethyl acetate at 0 - 20℃; for 12h; Large scale;88%
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 dichloromethane at -10 - -5℃; for 3h;77%
With O-(benzotriazol-1-yl)-N,N,N',N'-tetramethyluronium tetrafluoroborate; N-ethyl-N,N-diisopropylamine In dichloromethane at 0 - 5℃; for 2.5h; Large scale;
(aR,3aS,4S,6S,7aR)-hexahydro-3a,8,8-trimethyl-α-(2-methylpropyl)-4,6-methano-1,3,2-benzodioxaborole-2-methanamine 2,2,2-trifluoroacetate

(aR,3aS,4S,6S,7aR)-hexahydro-3a,8,8-trimethyl-α-(2-methylpropyl)-4,6-methano-1,3,2-benzodioxaborole-2-methanamine 2,2,2-trifluoroacetate

(S)-3-phenyl-2-[(pyrazine-2-carbonyl)amino]propanoic acid
114457-94-2

(S)-3-phenyl-2-[(pyrazine-2-carbonyl)amino]propanoic acid

N-[(1S)-1[[[(1R)-1-[(3aS,4S,6S,7aR)-hexahydro-3a,5,5-trimethyl-4,6-methano-1,3,2-benzodioxaborol-2-yl]-3-methylbutyl]amino]carbonyl]-2-benzyl]2-pyrazine carboxamide
205393-22-2

N-[(1S)-1[[[(1R)-1-[(3aS,4S,6S,7aR)-hexahydro-3a,5,5-trimethyl-4,6-methano-1,3,2-benzodioxaborol-2-yl]-3-methylbutyl]amino]carbonyl]-2-benzyl]2-pyrazine carboxamide

Conditions
ConditionsYield
With 4-methyl-morpholine; 2,4,6-tripropyl-1,3,5,2,4,6-trioxatriphosphinane-2,4,6-trioxide In dichloromethane; acetonitrile at -15 - 25℃; for 1.5h;86%
With O-(benzotriazol-1-yl)-N,N,N',N'-tetramethyluronium tetrafluoroborate; N-ethyl-N,N-diisopropylamine In dichloromethane at -10 - 20℃; optical yield given as %de;84%
Stage #1: (S)-3-phenyl-2[(pyrazine-2-carbonyl)-amino]propionic acid With 1-hydroxy-pyrrolidine-2,5-dione; dicyclohexyl-carbodiimide In dichloromethane at 25 - 30℃; for 0.166667 - 0.333333h;
Stage #2: (aR,3aS,4S,6S,7aR)-hexahydro-3a,8,8-trimethyl-α-(2-methylpropyl)-4,6-methano-1,3,2-benzodioxaborole-2-methanamine 2,2,2-trifluoroacetate With N-ethyl-N,N-diisopropylamine In dichloromethane at 25 - 30℃; for 2 - 3h; Product distribution / selectivity;
Stage #1: (S)-3-phenyl-2[(pyrazine-2-carbonyl)-amino]propionic acid With benzotriazol-1-ol; 1-ethyl-(3-(3-dimethylamino)propyl)-carbodiimide hydrochloride In dichloromethane at -5 - 0℃; for 0.25h;
Stage #2: (aR,3aS,4S,6S,7aR)-hexahydro-3a,8,8-trimethyl-α-(2-methylpropyl)-4,6-methano-1,3,2-benzodioxaborole-2-methanamine 2,2,2-trifluoroacetate With N-ethyl-N,N-diisopropylamine In dichloromethane at 5 - 30℃; for 1h; Product distribution / selectivity;
C11H24BNO2*C2HF3O2

C11H24BNO2*C2HF3O2

(S)-3-phenyl-2-[(pyrazine-2-carbonyl)amino]propanoic acid
114457-94-2

(S)-3-phenyl-2-[(pyrazine-2-carbonyl)amino]propanoic acid

bortezomib pinacol ester
1029701-48-1

bortezomib pinacol ester

Conditions
ConditionsYield
With O-(1H-benzotriazol-1-yl)-N,N,N',N'-tetramethyluronium hexafluorophosphate; 1-ethyl-(3-(3-dimethylamino)propyl)-carbodiimide hydrochloride; N-ethyl-N,N-diisopropylamine In dichloromethane; toluene at 0 - 80℃; for 8h; Large scale;86%
methyl (S)-2-amino-3-(naphthalen-2-yl)propanoate hydrochloride
63024-26-0

methyl (S)-2-amino-3-(naphthalen-2-yl)propanoate hydrochloride

(S)-3-phenyl-2-[(pyrazine-2-carbonyl)amino]propanoic acid
114457-94-2

(S)-3-phenyl-2-[(pyrazine-2-carbonyl)amino]propanoic acid

(S)-methyl 3-(naphthalen-2-yl)-2-((S)-3-phenyl-2-(pyrazine-2-carboxamido)-propanamido) propanoate
1194235-07-8

(S)-methyl 3-(naphthalen-2-yl)-2-((S)-3-phenyl-2-(pyrazine-2-carboxamido)-propanamido) propanoate

Conditions
ConditionsYield
Stage #1: (S)-3-phenyl-2[(pyrazine-2-carbonyl)-amino]propionic acid With benzotriazol-1-ol; dicyclohexyl-carbodiimide In tetrahydrofuran at 0℃; for 0.666667h;
Stage #2: methyl (S)-2-amino-3-(naphthalen-2-yl)propanoate hydrochloride With 4-methyl-morpholine In tetrahydrofuran for 12h;
83%
With benzotriazol-1-ol; dicyclohexyl-carbodiimide In tetrahydrofuran at 0℃;
C20H30BNO2*ClH

C20H30BNO2*ClH

(S)-3-phenyl-2-[(pyrazine-2-carbonyl)amino]propanoic acid
114457-94-2

(S)-3-phenyl-2-[(pyrazine-2-carbonyl)amino]propanoic acid

C34H41BN4O4

C34H41BN4O4

Conditions
ConditionsYield
Stage #1: (S)-3-phenyl-2[(pyrazine-2-carbonyl)-amino]propionic acid With benzotriazol-1-ol In dichloromethane for 0.166667h;
Stage #2: With 1-ethyl-(3-(3-dimethylamino)propyl)-carbodiimide hydrochloride In dichloromethane for 0.25h;
Stage #3: C20H30BNO2*ClH With N-ethyl-N,N-diisopropylamine In dichloromethane
79.3%
(S)-3-phenyl-2-[(pyrazine-2-carbonyl)amino]propanoic acid
114457-94-2

(S)-3-phenyl-2-[(pyrazine-2-carbonyl)amino]propanoic acid

(1R)-3-methyl-1-[(3aS,4S,6S,7aR)-3a,5,5-trimethylhexahydro-4,6-methano-1,3,2-benzodioxabor-ol-2-yl]butan-1-amine hydrochloride

(1R)-3-methyl-1-[(3aS,4S,6S,7aR)-3a,5,5-trimethylhexahydro-4,6-methano-1,3,2-benzodioxabor-ol-2-yl]butan-1-amine hydrochloride

N-[(1S)-1[[[(1R)-1-[(3aS,4S,6S,7aR)-hexahydro-3a,5,5-trimethyl-4,6-methano-1,3,2-benzodioxaborol-2-yl]-3-methylbutyl]amino]carbonyl]-2-benzyl]2-pyrazine carboxamide
205393-22-2

N-[(1S)-1[[[(1R)-1-[(3aS,4S,6S,7aR)-hexahydro-3a,5,5-trimethyl-4,6-methano-1,3,2-benzodioxaborol-2-yl]-3-methylbutyl]amino]carbonyl]-2-benzyl]2-pyrazine carboxamide

Conditions
ConditionsYield
Stage #1: (S)-3-phenyl-2[(pyrazine-2-carbonyl)-amino]propionic acid With benzotriazol-1-ol In dichloromethane at -5℃; for 0.333333h;
Stage #2: (1R)-3-methyl-1-[(3aS,4S,6S,7aR)-3a,5,5-trimethylhexahydro-4,6-methano-1,3,2-benzodioxabor-ol-2-yl]butan-1-amine hydrochloride With 1-ethyl-(3-(3-dimethylamino)propyl)-carbodiimide hydrochloride; N-ethyl-N,N-diisopropylamine In dichloromethane at -15 - 20℃; for 3h;
79%
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 dichloromethane at -10 - -5℃; for 3h;72%
water
7732-18-5

water

copper(II) acetate monohydrate
6046-93-1

copper(II) acetate monohydrate

(S)-3-phenyl-2-[(pyrazine-2-carbonyl)amino]propanoic acid
114457-94-2

(S)-3-phenyl-2-[(pyrazine-2-carbonyl)amino]propanoic acid

[Cu((S)-3-phenyl-2-(pyrazine-2-carboxamido) propanoic acid-2H)(H2O)]*H2O

[Cu((S)-3-phenyl-2-(pyrazine-2-carboxamido) propanoic acid-2H)(H2O)]*H2O

Conditions
ConditionsYield
In sodium hydroxide; acetonitrile aq. NaOH; High Pressure; mixt. of Cu(OAc)2*H2O, aq. NaOH, ligand, CH3CN and water sealed in Teflon-lined autoclave and heated at 120°C for 4 d and then autoclave slowly cooled; crystals filtered off, washed with water and dried in air; elem. anal.;78%
C18H26BNO2*ClH

C18H26BNO2*ClH

(S)-3-phenyl-2-[(pyrazine-2-carbonyl)amino]propanoic acid
114457-94-2

(S)-3-phenyl-2-[(pyrazine-2-carbonyl)amino]propanoic acid

C32H37BN4O4

C32H37BN4O4

Conditions
ConditionsYield
Stage #1: (S)-3-phenyl-2[(pyrazine-2-carbonyl)-amino]propionic acid With benzotriazol-1-ol In dichloromethane for 0.166667h;
Stage #2: With 1-ethyl-(3-(3-dimethylamino)propyl)-carbodiimide hydrochloride In dichloromethane for 0.25h;
Stage #3: C18H26BNO2*ClH With N-ethyl-N,N-diisopropylamine In dichloromethane
77.9%
C15H28BNO2*C2HF3O2

C15H28BNO2*C2HF3O2

(S)-3-phenyl-2-[(pyrazine-2-carbonyl)amino]propanoic acid
114457-94-2

(S)-3-phenyl-2-[(pyrazine-2-carbonyl)amino]propanoic acid

N-[(1S)-1-[[[(1R)-1-[(3aS,4R,6R,7aR)-hexahydro-3a,5,5-trimethyl-4,6-methano-1,3,2-benzodioxaborol-2-yl]-3-methylbutyl]-amino]carbonyl]-2-phenyl]-2-pyrazincarboxamide
1621908-72-2

N-[(1S)-1-[[[(1R)-1-[(3aS,4R,6R,7aR)-hexahydro-3a,5,5-trimethyl-4,6-methano-1,3,2-benzodioxaborol-2-yl]-3-methylbutyl]-amino]carbonyl]-2-phenyl]-2-pyrazincarboxamide

Conditions
ConditionsYield
With O-(1H-benzotriazol-1-yl)-N,N,N',N'-tetramethyluronium hexafluorophosphate; N-ethyl-N,N-diisopropylamine In N,N-dimethyl-formamide at 0 - 20℃; for 16h;73%
(1S,2S,3R,5S)-pinanediol L-proline boronate hydrochloride

(1S,2S,3R,5S)-pinanediol L-proline boronate hydrochloride

(S)-3-phenyl-2-[(pyrazine-2-carbonyl)amino]propanoic acid
114457-94-2

(S)-3-phenyl-2-[(pyrazine-2-carbonyl)amino]propanoic acid

N-((S)-1-oxo-3-phenyl-1-((R)-2-((3aS,4S,6S,7aR)-3a,5,5,7a-tetramethylhexahydro-4,6-methanobenzo[d][1,3,2]dioxaborol-2-yl)pyrrolidin-1-yl)propan-2-yl)pyrazine-2-carboxamide

N-((S)-1-oxo-3-phenyl-1-((R)-2-((3aS,4S,6S,7aR)-3a,5,5,7a-tetramethylhexahydro-4,6-methanobenzo[d][1,3,2]dioxaborol-2-yl)pyrrolidin-1-yl)propan-2-yl)pyrazine-2-carboxamide

Conditions
ConditionsYield
With benzotriazol-1-ol; 1-ethyl-(3-(3-dimethylamino)propyl)-carbodiimide hydrochloride; N-ethyl-N,N-diisopropylamine In dichloromethane at 20℃; for 24h;71%
C16H30BNO2*ClH

C16H30BNO2*ClH

(S)-3-phenyl-2-[(pyrazine-2-carbonyl)amino]propanoic acid
114457-94-2

(S)-3-phenyl-2-[(pyrazine-2-carbonyl)amino]propanoic acid

C30H41BN4O4

C30H41BN4O4

Conditions
ConditionsYield
Stage #1: (S)-3-phenyl-2[(pyrazine-2-carbonyl)-amino]propionic acid With benzotriazol-1-ol In dichloromethane for 0.166667h;
Stage #2: With 1-ethyl-(3-(3-dimethylamino)propyl)-carbodiimide hydrochloride In dichloromethane for 0.25h;
Stage #3: C16H30BNO2*ClH With N-ethyl-N,N-diisopropylamine In dichloromethane
70.6%
6-aminobenzo[c][1,2]oxaborol-1(3H)-ol

6-aminobenzo[c][1,2]oxaborol-1(3H)-ol

(S)-3-phenyl-2-[(pyrazine-2-carbonyl)amino]propanoic acid
114457-94-2

(S)-3-phenyl-2-[(pyrazine-2-carbonyl)amino]propanoic acid

(S)-N-{1-[(1-hydroxy-1,3-dihydro-2,1-benzoxaborol-6-yl)amino]-1-oxo-3-phenylpropan-2-yl}pyrazine-2-carboxamide

(S)-N-{1-[(1-hydroxy-1,3-dihydro-2,1-benzoxaborol-6-yl)amino]-1-oxo-3-phenylpropan-2-yl}pyrazine-2-carboxamide

Conditions
ConditionsYield
With 4-methyl-morpholine In tetrahydrofuran at 20℃; for 0.166667h;53%
L-leucine tert-butyl ester hydrochloride
2748-02-9

L-leucine tert-butyl ester hydrochloride

(S)-3-phenyl-2-[(pyrazine-2-carbonyl)amino]propanoic acid
114457-94-2

(S)-3-phenyl-2-[(pyrazine-2-carbonyl)amino]propanoic acid

C24H32N4O4

C24H32N4O4

Conditions
ConditionsYield
Stage #1: L-leucine tert-butyl ester hydrochloride; (S)-3-phenyl-2[(pyrazine-2-carbonyl)-amino]propionic acid With N-ethyl-N,N-diisopropylamine In N,N-dimethyl-formamide at 20℃; for 0.0833333h;
Stage #2: With 4-(4,6-dimethoxy-1,3,5-triazin-2-yl)-4-methylmorpholinium chloride at 20℃; for 3h;
38%
leucine vinyl sulfone trifluoroacetate

leucine vinyl sulfone trifluoroacetate

(S)-3-phenyl-2-[(pyrazine-2-carbonyl)amino]propanoic acid
114457-94-2

(S)-3-phenyl-2-[(pyrazine-2-carbonyl)amino]propanoic acid

C22H28N4O4S

C22H28N4O4S

Conditions
ConditionsYield
Stage #1: (S)-3-phenyl-2[(pyrazine-2-carbonyl)-amino]propionic acid With (benzotriazo-1-yloxy)tris(dimethylamino)phosphonium hexafluorophosphate; N-ethyl-N,N-diisopropylamine In dichloromethane
Stage #2: leucine vinyl sulfone trifluoroacetate In dichloromethane for 4h; Further stages.;
19%

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