2-Amino-3-bromopyrazine

Base Information

• Chemical Name: 2-Amino-3-bromopyrazine
• CAS No.: 21943-12-4
• Molecular Formula: C4H4BrN3
• Molecular Weight: 174
• Hs Code.: 2933990090
• European Community (EC) Number: 877-667-7
• ChEMBL ID: CHEMBL4515428
• DSSTox Substance ID: DTXSID40563422
• Wikidata: Q72438869
• Mol file: 21943-12-4.mol

Synonyms:2-Amino-3-bromopyrazine;21943-12-4;3-bromopyrazin-2-amine;3-BROMO-2-PYRAZINAMINE;C4H4BrN3;MFCD09909692;Bromopyrazin-2-amine;3-bromo-pyrazin-2-ylamine;SCHEMBL557517;CHEMBL4515428;DTXSID40563422;BFEUGUAUYFATRV-UHFFFAOYSA-N;BCP23405;AKOS005259030;AC-5179;CS-W008796;FS-2747;MB08183;SY017457;A4698;AM20070326;EN300-110283;Q-103302;Ethyl5-methyl-3-(methylthio)-4,4-dioxo-4,5-dihydro-4lambda6-benzo[c]thieno[3,4-e][1,2]thiazine-1-carboxylate

Chemical Property of 2-Amino-3-bromopyrazine

Chemical Property:

• Vapor Pressure: 0.005mmHg at 25°C
• Refractive Index: 1.649
• Boiling Point: 275.603 °C at 760 mmHg
• PKA: 2.37±0.10(Predicted)
• Flash Point: 120.481 °C
• PSA: 51.80000
• Density: 1.844 g/cm³
• LogP: 1.40250
• Storage Temp.: under inert gas (nitrogen or Argon) at 2–8 °C
• XLogP3: 0.5
• Hydrogen Bond Donor Count: 1
• Hydrogen Bond Acceptor Count: 3
• Rotatable Bond Count: 0
• Exact Mass: 172.95886
• Heavy Atom Count: 8
• Complexity: 77.7

Purity/Quality:

99% ^*data from raw suppliers

3-Bromo-2-pyrazinamine ^*data from reagent suppliers

Safty Information:

• Pictogram(s):  
• Hazard Codes: 

MSDS Files:

SDS file from LookChem

Useful:

• Canonical SMILES: C1=CN=C(C(=N1)N)Br
• Uses: 3-bromo-2-pyrazinamine, is a substituted pyrazine derivative, that can be potentially used in chemical synthesis.

Technology Process of 2-Amino-3-bromopyrazine

There total 2 articles about 2-Amino-3-bromopyrazine 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: 48.0%

2-Aminopyrazine (5049-61-6) → 5-amino-2-bromopyrazine (59489-71-3) + 3-bromo-pyrazine-2-amine (21943-12-4)

Guidance literature:

With bromodioxane; In 1,4-dioxane; at 100 ℃; for 0.5h; Reagent/catalyst; Solvent;

DOI:10.1055/s-0039-1690183

Reference yield: 35.0%

2-Aminopyrazine (5049-61-6) → 5-amino-2-bromopyrazine (59489-71-3) + 3-bromo-pyrazine-2-amine (21943-12-4) + 2-amino-3,5-dibromopyrazine (24241-18-7)

Guidance literature:

With pyridine; bromine; In chloroform; for 3h; Ambient temperature; 1.1 equivalent bromine and pyridine;

DOI:10.1002/jhet.5570190347

Reference yield: 76.0%

3-bromo-pyrazine-2-amine (21943-12-4) + ethyl 2-bromo-3-oxo-3-(4-phenoxyphenyl)propanoate → C21H16BrN3O3

Guidance literature:

In ethanol; at 80 ℃; for 24h;

upstream raw materials:

2-Aminopyrazine

Downstream raw materials:

pyrazine-2,3-diamine

3-aminopyrazine-2-thiol

N-(3-bromopyrazin-2-yl)-2,3-dichlorobenzenesulfonamide

2-Amino-3-phenylpyrazine