Desilylation of α-alkoxysilanes offers the convenient generation of carbinyl carbanions which react with a variety of carbonyl compounds giving mono-protected 1,2-diols of unsymmetrical type. Dehydration of these unsymmetrical diols leads to the regioselective formation of methyl ketones.
α-烷氧基
硅烷的脱烷基化提供了方便的羰基羰基负离子的生成,这些负离子与多种羰基化合物反应,产生不对称类型的单保护1,2
-二醇。这些不对称二醇的脱
水反应导致区域选择性形成甲基酮。