[reaction: see text] In situ generated 3-tert-butyldimethylsilyloxyalk-2-enylsulfonium salts derived from the reaction of alpha,beta-enones with dimethyl sulfide in the presence of TBSOTf undergo a novel nucleophilic substitution with in situ generated allylindium reagents from indium and allyl halides to give silyl enol ethers of delta,epsilon-unsaturated ketones, which correspond to Michael addition
[反应:参见正文]在TBSOTf存在下,由α,β-烯酮与
二甲基硫醚反应衍生的原位生成的3-叔丁基二甲基甲
硅烷氧基烷-2-烯基salts盐经过
铟的原位生成的烯丙基试剂进行新型亲核取代和烯丙基卤化物以良好的收率得到δ,ε-不饱和酮的甲
硅烷基烯醇醚,其对应于迈克尔加成产物。