A simple approach for the regioselective synthesis of imidazo[1,2-a]pyrimidiones and pyrimido[1,2-a]pyrimidinones
Keywords: صرف جایگزینی; Imidazo[1,2-a]pyrimidinone; Pyrimido[1,2-b]pyrimidinone; Mitsunobu reaction; ipso-Substitution; Acidic hydrolysis;