反应详情

温度

80 °C

To a solution of methyl-2-oxocyclopentane carboxylate (2 g, 11.8 mmol, 1 eq), in dry ethanol (20 ml) was added a solution of 2-fluoro-5-chlorobenzamidine (2.04 g, 11.8 mmol, 1 eq) in ethanol (20 ml) and the reaction mixture was heated to 80° C. overnight. The reaction mixture was cooled to rt and the solvent was removed in vacuo to afford a crude residue which was purified by recrystallization from hot ethyl acetate to afford 2-(5-chloro-2-fluorophenyl)-5,6,7,8-tetrahydroquinazolin-4-ol (2.56 g, 78%) as a white solid.

1. temperatureThe reaction mixture was cooled to rt
2. customthe solvent was removed in vacuo
3. customto afford a crude residue which
4. customwas purified by recrystallization from hot ethyl acetate