3-(4-chlorophenyl)-4-phenylazo-1H-pyrazole-5-carboxylic acid ethyl ester

Base Information

Chemical Name:3-(4-chlorophenyl)-4-phenylazo-1H-pyrazole-5-carboxylic acid ethyl ester
CAS No.:1224879-13-3
Molecular Formula:C₁₈H₁₅ClN₄O₂
Molecular Weight:354.796
Hs Code.:

Synonyms:3-(4-chlorophenyl)-4-phenylazo-1H-pyrazole-5-carboxylic acid ethyl ester

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Chemical Property of 3-(4-chlorophenyl)-4-phenylazo-1H-pyrazole-5-carboxylic acid ethyl ester

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Technology Process of 3-(4-chlorophenyl)-4-phenylazo-1H-pyrazole-5-carboxylic acid ethyl ester

There total 3 articles about 3-(4-chlorophenyl)-4-phenylazo-1H-pyrazole-5-carboxylic acid ethyl ester 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: 80.3%

: 1224879-08-6
C₁₈H₁₅ClN₂O₄

: 299921-97-4
C₁₆H₁₁ClN₄O₂

: 1224879-13-3
3-(4-chlorophenyl)-4-phenylazo-1H-pyrazole-5-carboxylic acid ethyl ester

Guidance literature:: With hydrazine hydrate; In acetic acid; at 20 ℃; for 4h;
DOI:10.1007/s00044-010-9328-z

Reference yield:

: 5814-38-0
ethyl 4-chlorobenzoylpyruvate

: 1224879-13-3
3-(4-chlorophenyl)-4-phenylazo-1H-pyrazole-5-carboxylic acid ethyl ester

Guidance literature:: Multi-step reaction with 2 steps

1.1: hydrogenchloride; sodium nitrite / water / 1 h / 0 °C

1.2: 2 h / 0 - 5 °C

2.1: hydrazine hydrate / acetic acid / 4 h / 20 °C

With hydrogenchloride; hydrazine hydrate; sodium nitrite; In water; acetic acid;
DOI:10.1007/s00044-010-9328-z

Reference yield:

: 99-91-2
para-chloroacetophenone

: 1224879-13-3
3-(4-chlorophenyl)-4-phenylazo-1H-pyrazole-5-carboxylic acid ethyl ester

Guidance literature:: Multi-step reaction with 3 steps

1.1: sodium ethanolate / 3 h / 0 - 5 °C

2.1: hydrogenchloride; sodium nitrite / water / 1 h / 0 °C

2.2: 2 h / 0 - 5 °C

3.1: hydrazine hydrate / acetic acid / 4 h / 20 °C

With hydrogenchloride; hydrazine hydrate; sodium ethanolate; sodium nitrite; In water; acetic acid;
DOI:10.1007/s00044-010-9328-z