2,3-Dichloro-5,6-dimethylpyrazine

Base Information

• Chemical Name: 2,3-Dichloro-5,6-dimethylpyrazine
• CAS No.: 32493-79-1
• Molecular Formula: C6H6Cl2N2
• Molecular Weight: 177.03100
• Hs Code.: 2933990090
• European Community (EC) Number: 850-136-7
• DSSTox Substance ID: DTXSID00510896
• Wikidata: Q82369443
• Mol file: 32493-79-1.mol

Synonyms:2,3-Dichloro-5,6-dimethylpyrazine;32493-79-1;MFCD18449257;SCHEMBL4314460;DTXSID00510896;ZSOPOANLAMBETK-UHFFFAOYSA-N;AKOS006370455;BS-13343;SY107910;CS-0061371;EN300-91334;O10567;A875604;2 pound not3-Dichloro-5 pound not6-dimethylpyrazine;Z1198725897

Chemical Property of 2,3-Dichloro-5,6-dimethylpyrazine

Chemical Property:

• Melting Point: 80-81 °C(Solv: hexane (110-54-3))
• Boiling Point: 122-123 °C(Press: 15 Torr)
• PKA: -3.25±0.10(Predicted)
• PSA: 25.78000
• Density: 1.337±0.06 g/cm3(Predicted)
• LogP: 2.40020
• Storage Temp.: under inert gas (nitrogen or Argon) at 2-8°C
• XLogP3: 2.5
• Hydrogen Bond Donor Count: 0
• Hydrogen Bond Acceptor Count: 2
• Rotatable Bond Count: 0
• Exact Mass: 175.9908036
• Heavy Atom Count: 10
• Complexity: 106

Purity/Quality:

97% ^*data from raw suppliers

2,3-Dichloro-5,6-dimethylpyrazine ^*data from reagent suppliers

Safty Information:

• Pictogram(s):  
• Hazard Codes: 

MSDS Files:

SDS file from LookChem

Useful:

• Canonical SMILES: CC1=C(N=C(C(=N1)Cl)Cl)C

Technology Process of 2,3-Dichloro-5,6-dimethylpyrazine

There total 8 articles about 2,3-Dichloro-5,6-dimethylpyrazine 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: 19.0%

6-Chloro-2,3-dimethylpyrazine 4-Oxide (76850-14-1) → 5,6-Dichloro-2,3-dimethylpyrazine (32493-79-1) + 6-Chloro-3-chloromethyl-2-methylpyrazine (83520-57-4)

Guidance literature:

With trichlorophosphate; for 0.5h; Heating;

Reference yield:

3-bromo-5,6-dimethyl-1H-pyrazin-2-one (100450-13-3) → 5,6-Dichloro-2,3-dimethylpyrazine (32493-79-1)

Guidance literature:

With trichlorophosphate;

DOI:10.1021/ja01597a057

Reference yield:

2,3-Dimethyl-5-hydroxypyrazine (57229-36-4) → 5,6-Dichloro-2,3-dimethylpyrazine (32493-79-1)

Guidance literature:

Multi-step reaction with 3 steps

1: bromine; pyridine; acetic acid

2: aqueous HBr<48percent >

3: POCl₃

With pyridine; hydrogen bromide; bromine; acetic acid; trichlorophosphate;

DOI:10.1021/ja01597a057

upstream raw materials:

3-bromo-5,6-dimethyl-1H-pyrazin-2-one

5,6-dimethyl-1,4-dihydro-pyrazine-2,3-dione

6-Chloro-2,3-dimethylpyrazine 4-Oxide

2,3-dimethylpyrazine

Downstream raw materials:

3-methoxy-5,6-dimethyl-1H-pyrazin-2-one