Hydrochloric Acid → HCID 178517557, compound

Participants

Reaction Steps

A mixture of diethyl 2-(2,4,6-trifluorophenyl)malonate (U.S. Pat. No. 6,156,925)(870 mg, 3.0 mmol), 2-pyrazinecarboxamidine hydrochloride (500 mg, 3.15 mmol), and 600 mg of tributylamine is stirred under nitrogen atmosphere at 180° C. for 1 h and cooled to room temperature. The mixture is cooled to room temperature and treated with 1.0 N hydrochloric acid. The precipitates are collected by filtration, washed with water and dried to give 2-pyrazin-2-yl-5-(2,4,6-trifluorophenyl)pyrimidine-4,6-diol as a tan solid (401 mg), which is used directly in the next step.

Provenance & Evidence