5-amino-3-(2-difluoromethoxyphenyl)pyrazole-1-carboxylic acid tert-butyl ester

Base Information

Chemical Name:5-amino-3-(2-difluoromethoxyphenyl)pyrazole-1-carboxylic acid tert-butyl ester
CAS No.:1608129-74-3
Molecular Formula:C₁₅H₁₇F₂N₃O₃
Molecular Weight:325.315
Hs Code.:

Synonyms:5-amino-3-(2-difluoromethoxyphenyl)pyrazole-1-carboxylic acid tert-butyl ester

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Chemical Property of 5-amino-3-(2-difluoromethoxyphenyl)pyrazole-1-carboxylic acid tert-butyl ester

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Technology Process of 5-amino-3-(2-difluoromethoxyphenyl)pyrazole-1-carboxylic acid tert-butyl ester

There total 4 articles about 5-amino-3-(2-difluoromethoxyphenyl)pyrazole-1-carboxylic acid tert-butyl 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: 73.0%

: 1040724-27-3
5-(2-difluoromethoxyphenyl)-2H-pyrazol-3-ylamine

: 24424-99-5
di-tert-butyl dicarbonate

: 1608129-74-3
5-amino-3-(2-difluoromethoxyphenyl)pyrazole-1-carboxylic acid tert-butyl ester

Guidance literature:: With potassium hydroxide; In dichloromethane; water; at 20 ℃; for 48h;
DOI:10.1016/j.ejmech.2014.03.031

Reference yield:

: 97914-59-5
2-(difluoromethoxy)benzoic acid

: 1608129-74-3
5-amino-3-(2-difluoromethoxyphenyl)pyrazole-1-carboxylic acid tert-butyl ester

Guidance literature:: Multi-step reaction with 4 steps

1: sulfuric acid / Reflux

2: n-butyllithium / toluene; hexane / 0.33 h / -78 - 20 °C / Inert atmosphere

3: hydrazine hydrate / ethanol / 18 h / Reflux

4: potassium hydroxide / water; dichloromethane / 48 h / 20 °C

With n-butyllithium; sulfuric acid; hydrazine hydrate; potassium hydroxide; In ethanol; hexane; dichloromethane; water; toluene;
DOI:10.1016/j.ejmech.2014.03.031

Reference yield:

: 1016690-71-3
C₁₀H₇F₂NO₂

: 1608129-74-3
5-amino-3-(2-difluoromethoxyphenyl)pyrazole-1-carboxylic acid tert-butyl ester

Guidance literature:: Multi-step reaction with 2 steps

1: hydrazine hydrate / ethanol / 18 h / Reflux

2: potassium hydroxide / water; dichloromethane / 48 h / 20 °C

With hydrazine hydrate; potassium hydroxide; In ethanol; dichloromethane; water;
DOI:10.1016/j.ejmech.2014.03.031