Metalated O-silyl cyanohydrins of beta-silyl-alpha,beta-epoxyaldehyde have been found to serve as functionalized homoenolate equivalents by a tandem sequence involving a base-promoted ring opening of the epoxide, Brook rearrangement, and alkylation of the resulting allylic anion.
[反应:请参见文字]。已经发现,β-甲
硅烷基-α,β-环氧醛的
金属化的O-甲
硅烷基
氰醇可以通过串联序列用作官能化的均
戊酸酯等效物,所述串联序列涉及
环氧化物的碱促进的开环,布鲁克重排和所得烯丙基阴离子的烷基化。