1-ethyl-N-(2-fluoro-5-hydroxyphenyl)-3-methyl-1H-pyrazole-4-carboxamide

Base Information

Chemical Name:1-ethyl-N-(2-fluoro-5-hydroxyphenyl)-3-methyl-1H-pyrazole-4-carboxamide
CAS No.:1451192-49-6
Molecular Formula:C₁₃H₁₄FN₃O₂
Molecular Weight:263.271
Hs Code.:

Synonyms:1-ethyl-N-(2-fluoro-5-hydroxyphenyl)-3-methyl-1H-pyrazole-4-carboxamide

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Chemical Property of 1-ethyl-N-(2-fluoro-5-hydroxyphenyl)-3-methyl-1H-pyrazole-4-carboxamide

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Technology Process of 1-ethyl-N-(2-fluoro-5-hydroxyphenyl)-3-methyl-1H-pyrazole-4-carboxamide

There total 2 articles about 1-ethyl-N-(2-fluoro-5-hydroxyphenyl)-3-methyl-1H-pyrazole-4-carboxamide 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: 57.0%

: 62257-16-3
5-hydroxy-2-fluoroaniline

: 113131-46-7
1-ethyl-3-methyl-1H-pyrazole-4-carboxylic acid

: 1451192-49-6
1-ethyl-N-(2-fluoro-5-hydroxyphenyl)-3-methyl-1H-pyrazole-4-carboxamide

Guidance literature:: 1-ethyl-3-methyl-1H-pyrazole-4-carboxylic acid; With thionyl chloride; In N,N-dimethyl acetamide; at 0 - 25 ℃; for 1h;

5-hydroxy-2-fluoroaniline; In N,N-dimethyl acetamide; at 15 - 25 ℃; for 1h; chemoselective reaction;
DOI:10.1016/j.tet.2013.07.087

Reference yield:

: 3788-94-1
2-ethoxymethylene-3-oxobutanoic acid ethyl ester

: 1451192-49-6
1-ethyl-N-(2-fluoro-5-hydroxyphenyl)-3-methyl-1H-pyrazole-4-carboxamide

Guidance literature:: Multi-step reaction with 2 steps

1.1: 1,2-dimethoxyethane / -20 - 20 °C

1.2: 2 h / 60 - 65 °C

2.1: thionyl chloride / N,N-dimethyl acetamide / 1 h / 0 - 25 °C

2.2: 1 h / 15 - 25 °C

With thionyl chloride; In 1,2-dimethoxyethane; N,N-dimethyl acetamide;
DOI:10.1016/j.tet.2013.07.087