6-[4-chloro-3-(trifluoromethoxy)benzyl]pyrazolo[1,5-a]pyrimidine-3-carboxylic acid

Base Information

Chemical Name:6-[4-chloro-3-(trifluoromethoxy)benzyl]pyrazolo[1,5-a]pyrimidine-3-carboxylic acid
CAS No.:1065081-64-2
Molecular Formula:C₁₅H₉ClF₃N₃O₃
Molecular Weight:371.703
Hs Code.:

Synonyms:6-[4-chloro-3-(trifluoromethoxy)benzyl]pyrazolo[1,5-a]pyrimidine-3-carboxylic acid

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Chemical Property of 6-[4-chloro-3-(trifluoromethoxy)benzyl]pyrazolo[1,5-a]pyrimidine-3-carboxylic acid

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Technology Process of 6-[4-chloro-3-(trifluoromethoxy)benzyl]pyrazolo[1,5-a]pyrimidine-3-carboxylic acid

There total 2 articles about 6-[4-chloro-3-(trifluoromethoxy)benzyl]pyrazolo[1,5-a]pyrimidine-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:

: 1065081-43-7
dimethyl [4-chloro-3-(trifluoromethoxy)benzyl]malonate

: 6994-25-8,103259-35-4,19750-02-8
3-amino-4-pyrazolecarboxylic acid ethyl ester

: 1065081-64-2
6-[4-chloro-3-(trifluoromethoxy)benzyl]pyrazolo[1,5-a]pyrimidine-3-carboxylic acid

Guidance literature:: dimethyl [4-chloro-3-(trifluoromethoxy)benzyl]malonate; With diisobutylaluminium hydride; In hexanes; dichloromethane; at -78 ℃; for 1.5h;

3-amino-4-pyrazolecarboxylic acid ethyl ester; In methanol; hexanes; dichloromethane; for 0.333333h;

With hydrogenchloride; potassium hydroxide; ethanol; water; more than 3 stages;

Reference yield:

: 886500-93-2
(4-chloro-3-trifluoromethoxy)benzyl bromide

: 1065081-64-2
6-[4-chloro-3-(trifluoromethoxy)benzyl]pyrazolo[1,5-a]pyrimidine-3-carboxylic acid

Guidance literature:: Multi-step reaction with 2 steps

1.1: sodium hydride / tetrahydrofuran / 0.5 h / 0 °C

1.2: 0 °C

2.1: diisobutylaluminium hydride / hexanes; dichloromethane / 1.5 h / -78 °C

2.2: 0.33 h

With sodium hydride; diisobutylaluminium hydride; In tetrahydrofuran; hexanes; dichloromethane;

Reference yield: 17.0%

: 1065081-64-2
6-[4-chloro-3-(trifluoromethoxy)benzyl]pyrazolo[1,5-a]pyrimidine-3-carboxylic acid

: 141-43-5
ethanolamine

: 1065080-23-0
6-[4-chloro-3-(trifluoromethoxy)benzyl]-N-(2-hydroxyethyl)pyrazolo[1,5-a]-pyrimidine-3-carboxamide

Guidance literature:: With O-(benzotriazol-1-yl)-N,N,N',N'-tetramethyluronium tetrafluoroborate; N-ethyl-N,N-diisopropylamine; In N,N-dimethyl-formamide; at 20 ℃; for 3.5h;