Reaction of o-dihydroxycoumarins and catechols with sodium hydride in hexamethylphosphoric triamide and dihalomethane provides the corresponding methylenedioxy compounds under mild conditions and in excellent yields.
在六
甲基膦酰胺和
二氟甲烷中,o-二羟基
香豆素和
儿茶酚与氢化
钠反应,可以在温和条件下以优异的产率生成相应的亚甲基二氧化合物。