undergo efficient olefination reactions with a variety of aldehydes in the presence of HMPA to give terminal 1,3-dienes with high selectivity for the E-isomer. This method is general and procedurally simple.
锂化的
烯丙基膦酸酯在 HMPA 存在下与多种醛进行有效的烯化反应,得到对 E-异构体具有高选择性的末端 1,3-二烯。该方法通用且程序简单。