Silylketenes react under Kulinkovich conditions through two competitive pathways: alkene/ketene exchange versus nucleophilic addition. In both cases, the organotitanium intermediate reacts with an aldehyde to yield an adduct which can undergo an elimination to yield a vinylcyclopropanol or an α,β-unsaturated carbonyl compound.
甲
硅烷基烯酮在Kulinkovich条件下通过两种竞争途径发生反应:烯烃/烯酮交换与亲核加成。在两种情况下,
有机钛中间体都与醛反应生成加合物,该加合物可以进行消除生成
乙烯基环丙醇或α,β-不饱和羰基化合物。