Selective rearrangement of epoxysilanes to α-silylaldehydes has been achieved with high efficiency by using exceptionally bulky oxygenophilic methylaluminum bis(4-bromo-2,6-di-tert-butylphenoxide) (MABR) as a stoichiometric reagent. Catalytic use of MABR led to silyl enol ethers in good yield.
通过使用特别笨重的亲氧甲基双铝(4-
溴-2,6-二叔丁基苯氧化物)(MABR)作为定量试剂,高效地实现了环氧
硅烷到 α-
硅醛的选择性重排。在 MABR 的催化下,
硅基烯醇醚的收率很高。