Oxidation of the E or Z isomers of the 1-acetyl-2-arylidene-1H-indol-3(2H)-ones 1 by dimethyldioxirane in acetone at ambient temperature led to the spiroepoxides 2 in good yield (70-90%) with complete diastereoselectivity.
在室温下,1-乙酰基-2-亚苄基-1H-
吲哚-3(2H)-酮1的E或Z异构体与二甲基二氧
环己烷在
丙酮中发生氧化反应,生成具有完全立体选择性且收率(70-90%)良好的螺环环氧物2。