5-Chloro-1-phenyl-1H-pyrazole

Base Information

• Chemical Name: 5-Chloro-1-phenyl-1H-pyrazole
• CAS No.: 1127-84-0
• Molecular Formula: C₉H₇ClN₂
• Molecular Weight: 178.621
• Hs Code.: 2933199090
• Mol file: 1127-84-0.mol

Synonyms:1-phenyl-5-chloro-pyrazole;1-Phenyl-5-chlor-pyrazol;1H-Pyrazole,5-chloro-1-phenyl;5-Chlor-1-phenyl-1H-pyrazol;Pyrazole,5-chloro-1-phenyl;5-Chloro-1-phenyl-1H-pyrazole;1-Phenyl-5-chloro-pyrazol;

Chemical Property of 5-Chloro-1-phenyl-1H-pyrazole

Chemical Property:

• PSA: 17.82000
• LogP: 2.52570
• Storage Temp.: 2-8°C

Purity/Quality:

98%,99%, ^*data from raw suppliers

5-Chloro-1-phenyl-1H-pyrazole 95+% ^*data from reagent suppliers

Safty Information:

• Pictogram(s):  
• Hazard Codes: 

MSDS Files:

SDS file from LookChem

Useful:

Technology Process of 5-Chloro-1-phenyl-1H-pyrazole

There total 7 articles about 5-Chloro-1-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: 34.0%

(E)-3,3-dichloropropenal phenylhydrazone (129298-17-5) → 5-chloro-1-phenyl-1H-pyrazole (1127-84-0)

Guidance literature:

With phosphoric acid; at 103 - 130 ℃;

DOI:10.1007/BF00506844

Reference yield:

phenylhydrazine (100-63-0) → 5-chloro-1-phenyl-1H-pyrazole (1127-84-0)

Guidance literature:

Multi-step reaction with 2 steps

1: 90 percent / acetonitrile / -30 - 20 °C

2: H₃PO₄ / 120 °C

With phosphoric acid; In acetonitrile;

DOI:10.1055/s-1997-1221

Reference yield:

phenylhydrazine hydrochloride (59-88-1) → 5-chloro-1-phenyl-1H-pyrazole (1127-84-0)

Guidance literature:

Multi-step reaction with 2 steps

1: 83 percent / AcONa*3H₂O / ethanol; H₂O / 3 h / 20 °C

2: 34 percent / 85 percent phosphoric acid / 103 - 130 °C / other 3,3-dichloro-2-propenal arylhydrazones

With phosphoric acid; sodium acetate; In ethanol; water;

DOI:10.1007/BF00506844

upstream raw materials:

2-phenyl-1,2-dihydro-pyrazol-3-one

5-chloro-1-phenyl-1H-pyrazole-3-carboxylic acid

(E)-3,3-dichloropropenal phenylhydrazone

trichlorophosphate

Downstream raw materials:

1-phenyl-4-bromo-5-chloropyrazole

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