6-[4-chloro-3-(trifluoromethoxy)benzyl]-7-methylpyrazolo[1,5-a]pyrimidine-3-carboxylic acid

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Chemical Name:6-[4-chloro-3-(trifluoromethoxy)benzyl]-7-methylpyrazolo[1,5-a]pyrimidine-3-carboxylic acid
CAS No.:1065082-70-3
Molecular Formula:C₁₆H₁₁ClF₃N₃O₃
Molecular Weight:385.73
Hs Code.:

Synonyms:6-[4-chloro-3-(trifluoromethoxy)benzyl]-7-methylpyrazolo[1,5-a]pyrimidine-3-carboxylic acid

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Chemical Property of 6-[4-chloro-3-(trifluoromethoxy)benzyl]-7-methylpyrazolo[1,5-a]pyrimidine-3-carboxylic acid

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Technology Process of 6-[4-chloro-3-(trifluoromethoxy)benzyl]-7-methylpyrazolo[1,5-a]pyrimidine-3-carboxylic acid

There total 4 articles about 6-[4-chloro-3-(trifluoromethoxy)benzyl]-7-methylpyrazolo[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:

: 1065082-65-6
ethyl 6-[4-chloro-3-(trifluoromethoxy)benzyl]-7-methylpyrazolo[1,5-a]pyrimidine-3-carboxylate

: 1065082-70-3
6-[4-chloro-3-(trifluoromethoxy)benzyl]-7-methylpyrazolo[1,5-a]pyrimidine-3-carboxylic acid

Guidance literature:: ethyl 6-[4-chloro-3-(trifluoromethoxy)benzyl]-7-methylpyrazolo[1,5-a]pyrimidine-3-carboxylate; With potassium hydroxide; ethanol; water; for 1h; Heating / reflux;

With hydrogenchloride; water; In ethanol;

Reference yield:

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

: 1065082-70-3
6-[4-chloro-3-(trifluoromethoxy)benzyl]-7-methylpyrazolo[1,5-a]pyrimidine-3-carboxylic acid

Guidance literature:: Multi-step reaction with 4 steps

1.1: sodium hydride / tetrahydrofuran / 0 °C

1.2: 1 h / 65 °C

2.1: lithium aluminium tetrahydride / tetrahydrofuran / 0 - 20 °C

2.2: 0 °C

3.1: oxalyl dichloride; dimethyl sulfoxide / tetrahydrofuran; dichloromethane / 0.58 h / Cooling with acetone-dry ice

4.1: potassium hydroxide; ethanol; water / 1 h / Heating / reflux

With potassium hydroxide; lithium aluminium tetrahydride; oxalyl dichloride; ethanol; water; sodium hydride; dimethyl sulfoxide; In tetrahydrofuran; dichloromethane;

Reference yield:

: 1065082-63-4
2-[4-chloro-3-(trifluoromethoxy)benzyl]butane-1,3-diol

: 1065082-70-3
6-[4-chloro-3-(trifluoromethoxy)benzyl]-7-methylpyrazolo[1,5-a]pyrimidine-3-carboxylic acid

Guidance literature:: Multi-step reaction with 2 steps

1: oxalyl dichloride; dimethyl sulfoxide / tetrahydrofuran; dichloromethane / 0.58 h / Cooling with acetone-dry ice

2: potassium hydroxide; ethanol; water / 1 h / Heating / reflux

With potassium hydroxide; oxalyl dichloride; ethanol; water; dimethyl sulfoxide; In tetrahydrofuran; dichloromethane;