Ethyl orthoformate → 7-(trifluoromethyl)pyrido[3,2-d]pyrimidin-4(3H)-one

Participants

Reaction Conditions

Reaction Steps

A vial was charged with 3-amino-5-(trifluoromethyl)picolinamide (615 mg, 3.00 mmol) and triethyl orthoformate (2496 μl, 14.99 mmol). The vial was sealed and the mixture was heated at 120° C. for 17 h. Upon cooling, the heterogeneous mixture was filtered and the solids were washed with heptane. 7-(trifluoromethyl)pyrido[3,2-d]pyrimidin-4(3H)-one (540 mg, 2.51 mmol, 84% yield) was isolated as a tan solid. LC/MS (ESI+) m/z=216.0 (M+H).

Provenance & Evidence