Trimethylsilyloxide-Catalysed Peterson Olefinations with 2,2-Bis(trimethylsilyl)-1,3-dithiane
作者:Atul Manvar、Donal F. O'Shea
DOI:10.1002/ejoc.201501185
日期:2015.11
The synthesis of the reagent 2,2-bis(trimethylsilyl)-1,3-dithiane was directly achieved in an excellent yield from 1,3-dithiane in one step. The bench-stable reagent can be utilized for Peterson olefinations using either TMSOK/Bu4NCl or fluoride ion as promoter of α-silyl carbanion formation, thereby generating ketene dithioacetals, which are versatile intermediates in organic synthesis. Olefination
试剂2,2-双(三甲基甲硅烷基)-1,3-二噻烷的合成是一步直接从1,3-二噻烷以极好的收率合成的。实验室稳定的试剂可用于使用 TMSOK/Bu4NCl 或氟离子作为 α-甲硅烷基碳负离子形成的促进剂的 Peterson 烯化,从而生成乙烯酮二硫缩醛,这是有机合成中的通用中间体。用芳香族、杂芳香族、脂肪族醛和酮成功地实现了烯烃化反应。