A High-Yield Method for the Methylenation of<i>o</i>-Dihydroxyaromatic Compounds: Synthesis of Methylenedioxycoumarins
作者:P. Castillo、J. C. Rodriguez-Ubis、F. Rodriguez
DOI:10.1055/s-1986-31796
日期:——
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。