3,4-dibromo-5-phenyl-1H-pyrazole

Base Information

• Chemical Name: 3,4-dibromo-5-phenyl-1H-pyrazole
• CAS No.: 5932-21-8
• Molecular Formula: C9H6Br2N2
• Molecular Weight: 301.96500
• DSSTox Substance ID: DTXSID201302213
• Nikkaji Number: J2.482.862J
• Mol file: 5932-21-8.mol

Synonyms:5932-21-8;3,4-dibromo-5-phenyl-1H-pyrazole;SCHEMBL11622011;DTXSID201302213;1H-Pyrazole, 3,4-dibromo-5-phenyl-

Chemical Property of 3,4-dibromo-5-phenyl-1H-pyrazole

Chemical Property:

• Melting Point: 130 - 132 °C
• PSA: 28.68000
• LogP: 3.60170
• XLogP3: 3.6
• Hydrogen Bond Donor Count: 1
• Hydrogen Bond Acceptor Count: 1
• Rotatable Bond Count: 1
• Exact Mass: 301.88772
• Heavy Atom Count: 13
• Complexity: 171

Purity/Quality:

95% ^*data from raw suppliers

Safty Information:

• Pictogram(s):  
• Hazard Codes: 

MSDS Files:

Useful:

• Canonical SMILES: C1=CC=C(C=C1)C2=NNC(=C2Br)Br

Technology Process of 3,4-dibromo-5-phenyl-1H-pyrazole

There total 2 articles about 3,4-dibromo-5-phenyl-1H-pyrazole 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: 83.0%

5-phenyl-1H-pyrazole (2458-26-6) → 3,4-dibromo-5-phenyl-1H-pyrazole (5932-21-8,21601-71-8)

Guidance literature:

With sodium hydroxide; bromine; In methanol; for 1h;

DOI:10.1016/j.tet.2007.06.007

Reference yield:

→ 3,4-dibromo-5-phenyl-1H-pyrazole (5932-21-8,21601-71-8)

Guidance literature:

3,4-Dibrom-5-phenyl-1-<2,4-dinitro-phenyl>-pyrazol, Natriummethylat;

Reference yield:

3,4-dibromo-5-phenyl-1H-pyrazole (5932-21-8,21601-71-8) → 4,5-dibromo-N,N,α-trimethyl-3-phenylpyrazole-1-acetamide (59843-39-9) + 3,4-dibromo-N,N,α-trimethyl-5-phenylpyrazole-1-acetamide (59843-40-2)

Guidance literature:

upstream raw materials:

5-phenyl-1H-pyrazole

Downstream raw materials:

4,5-dibromo-N,N,α-trimethyl-3-phenylpyrazole-1-acetamide

3,4-dibromo-N,N,α-trimethyl-5-phenylpyrazole-1-acetamide