反应详情

A solution of Compound 142 (5.0 g, 0.0237 mole) in methanol (50 mL) is saturated with dry gaseous ammonia at room temperature. The precipitate is filtered, washed with methanol and dried to give 3.16 g of the title compound as a white solid, a 68% yield. m.p. 190°-220° C.

1. filtrationThe precipitate is filtered
2. washwashed with methanol
3. customdried