Stereospecific synthesis of divinyl selenides nucleophilic substitutions of unactivated vinyl halides by vinyl selenide anions
作者:Lorenzo Testaferri、Marcello Tiecco、Marco Tingoli、Donatella Chianelli
DOI:10.1016/s0040-4020(01)87402-0
日期:1986.1
Vinyl alkyl selenides can be dealkylated by nucleophilic substitution or by electron transfer to give vinyl selenide anions which retain the configuration of the starting products. The same anions are also produced by electron transfer from vinyl acetyl selenides. The vinyl selenide anions react with vinyl halides, in DMF or DMA, to give divinyl selenides. These reactions occur with retention of configuration
乙烯基烷基硒化物可通过亲核取代或通过电子转移脱烷基,得到保留起始产物构型的乙烯基硒化物阴离子。同样的阴离子也可以通过电子转移从乙烯基乙酰硒化物中产生。硒化乙烯基阴离子与卤化乙烯基在DMF或DMA中反应,生成二乙烯基硒化物。这些反应在保留构型的情况下发生,代表了未活化乙烯基卤化物亲核取代的新例子。