4-bromo-5-(4-chlorophenyl)-1-(2,4-dichlorophenyl)-1H-pyrazole-3-carboxylic acid

Base Information

Chemical Name:4-bromo-5-(4-chlorophenyl)-1-(2,4-dichlorophenyl)-1H-pyrazole-3-carboxylic acid
CAS No.:958879-04-4
Molecular Formula:C₁₆H₈BrCl₃N₂O₂
Molecular Weight:446.515
Hs Code.:

Synonyms:4-bromo-5-(4-chlorophenyl)-1-(2,4-dichlorophenyl)-1H-pyrazole-3-carboxylic acid

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Chemical Property of 4-bromo-5-(4-chlorophenyl)-1-(2,4-dichlorophenyl)-1H-pyrazole-3-carboxylic acid

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Technology Process of 4-bromo-5-(4-chlorophenyl)-1-(2,4-dichlorophenyl)-1H-pyrazole-3-carboxylic acid

There total 5 articles about 4-bromo-5-(4-chlorophenyl)-1-(2,4-dichlorophenyl)-1H-pyrazole-3-carboxylic acid 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: 97.0%

: 501426-57-9
1-(2,4-dichlorophenyl)-4-bromo-5-(4-chlorophenyl)-1H-pyrazole-3-carboxylic acid ethyl ester

: 958879-04-4
4-bromo-5-(4-chlorophenyl)-1-(2,4-dichlorophenyl)-1H-pyrazole-3-carboxylic acid

Guidance literature:: 1-(2,4-dichlorophenyl)-4-bromo-5-(4-chlorophenyl)-1H-pyrazole-3-carboxylic acid ethyl ester; With methanol; potassium hydroxide; at 20 - 100 ℃; for 5h;

With hydrogenchloride; water;

Reference yield: 81.0%

: 158941-07-2
1-(2,4-Dichlorophenyl)-5-(4-chlorophenyl)-1H-pyrazole-3-carboxylic acid

: 958879-04-4
4-bromo-5-(4-chlorophenyl)-1-(2,4-dichlorophenyl)-1H-pyrazole-3-carboxylic acid

Guidance literature:: With bromine; In dichloromethane; at 20 ℃; for 16h;

Reference yield:

: 5446-18-4
2,4-dichlorophenyl hydrazine hydrochloride

: 958879-04-4
4-bromo-5-(4-chlorophenyl)-1-(2,4-dichlorophenyl)-1H-pyrazole-3-carboxylic acid

Guidance literature:: Multi-step reaction with 3 steps

1.1: lithium bis(trimethylsilyl)amide / diethyl ether; various solvent(s) / -78 - 0 °C

1.2: ethanol / 20 °C

1.3: 76 percent / AcOH / Heating

2.1: 51 percent / Br₂ / CH₂Cl₂ / 20 °C

3.1: KOH / methanol / Heating

With potassium hydroxide; bromine; lithium hexamethyldisilazane; In methanol; diethyl ether; dichloromethane;
DOI:10.1021/jm020157x