反应详情

A solution of 8-methoxy-4-benzopyranone (31.6 g), triethylamine (4.9 ml) and 10% palladium on carbon (3.1 g) in absolute ethanol (1.7 l) is stirred under an atmosphere of hydrogen (P=52 lbs.) overnight. The resulting solid is filtered, washed with diethyl ether and evaporated in vacuo yielding the desired product as a solid.

1. filtrationThe resulting solid is filtered
2. washwashed with diethyl ether
3. customevaporated in vacuo