Ethanol → 4-[2-Methanesulfonyl-6-(3-trifluoromethyl-phenyl)-pyrimidin-4-yl]-piperazine-1-carboxylic acid tert-butyl ester

Participants

Reaction Steps

To a stirring solution of 4-(6-chloro-2-methanesulfonyl-pyrimidin-4-yl)-piperazine-1-carboxylic acid tert-butyl ester (500 mg) in a 1:1 mixture of ethanol and toluene (10 ml) was added 3-(trifluoromethyl)phenylboronic acid (277 mg), sodium carbonate (422 mg), water (500 μl) and CombiPhos-Pd6 (30.5 mg) catalyst mixture. The resulting suspension was heated at reflux for 3 hrs before being filtered through celite and concentrated in vacuo to give 4-[2-methanesulfonyl-6-(3-trifluoromethyl-phenyl)-pyrimidin-4-yl]-piperazine-1-carboxylic acid tert-butyl ester as a yellow oil (720 mg).

Provenance & Evidence