6-Bromo-3-chloropyrazine-2-carbonitrile

Base Information

• Chemical Name: 6-Bromo-3-chloropyrazine-2-carbonitrile
• CAS No.: 1257072-34-6
• Molecular Formula: C5HBrClN3
• Molecular Weight: 218.44
• Hs Code.: 2933990090
• Mol file: 1257072-34-6.mol

Synonyms:6-Bromo-3-chloropyrazine-2-carbonitrile;6-BroMo-3-chloro-2-pyrazinecarbontirile

Chemical Property of 6-Bromo-3-chloropyrazine-2-carbonitrile

Chemical Property:

• PSA: 49.57000
• LogP: 1.76418
• Storage Temp.: under inert gas (nitrogen or Argon) at 2-8°C

Purity/Quality:

97% ^*data from raw suppliers

6-Bromo-3-Chloropyrazine-2-Carbonitrile ^*data from reagent suppliers

Safty Information:

• Pictogram(s):  
• Hazard Codes: 

MSDS Files:

SDS file from LookChem

Useful:

Technology Process of 6-Bromo-3-chloropyrazine-2-carbonitrile

There total 3 articles about 6-Bromo-3-chloropyrazine-2-carbonitrile which guide to synthetic route it. The literature collected by LookChem mainly comes from the sharing of users and the free literature resources found by Internet computing technology. We keep the original model of the professional version of literature to make it easier and faster for users to retrieve and use. At the same time, we analyze and calculate the most feasible synthesis route with the highest yield for your reference as below:

synthetic route:

Reference yield: 85.0%

2-amino-5-bromo-3-cyanopyrazine (17231-51-5) → 6-bromo-3-chloropyrazine-2-carbonitrile (1257072-34-6)

Guidance literature:

With tert.-butylnitrite; titanium tetrachloride; In dichloromethane; at 0 - 20 ℃; for 3h;

DOI:10.1007/s11696-018-0654-9

Reference yield: 62.0%

6-bromo-3-hydroxypyrazine-2-carboxamide → 6-bromo-3-chloropyrazine-2-carbonitrile (1257072-34-6)

Guidance literature:

With N-ethyl-N,N-diisopropylamine; trichlorophosphate; In chlorobenzene; at 0 - 100 ℃; for 17h;

Reference yield:

3-hydroxy-2-pyrazinecarboxamide (55321-99-8) → 6-bromo-3-chloropyrazine-2-carbonitrile (1257072-34-6)

Guidance literature:

Multi-step reaction with 2 steps

1: tetrabutylammomium bromide; 2,6-dimethylpyridine / N,N-dimethyl-formamide / 17 h / 20 °C

2: trichlorophosphate; N-ethyl-N,N-diisopropylamine / chlorobenzene / 17 h / 0 - 100 °C

With 2,6-dimethylpyridine; tetrabutylammomium bromide; N-ethyl-N,N-diisopropylamine; trichlorophosphate; In N,N-dimethyl-formamide; chlorobenzene;

upstream raw materials:

2-amino-5-bromo-3-cyanopyrazine

3-hydroxy-2-pyrazinecarboxamide

Downstream raw materials:

chloro-6-(hydroxymethyl)pyrazine-2-carbonitrile

3,6-difluoropyrazine-2-carbonitrile

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