THE HIGHLY REGIOSELECTIVE COUPLING REACTION OF ALLYLIC ALCOHOLS WITH LITHIUM ENOLATE OF DITHIOESTERS USING 1-CHLORO-2-METHYL-<i>N</i>,<i>N</i>-TETRAMETHYLENEPROPENYLAMINE
作者:Tamotsu Fujisawa、Kazuto Umezu、Toshio Sato
DOI:10.1246/cl.1985.1453
日期:1985.10.5
1-Chloro-2-methyl-N,N-tetramethylenepropenylamine was found to be a good condensation reagent for the regioselective coupling reaction of allylic alcohols with lithium enolate of dithioesters under mild conditions to afford γ,δ-unsaturated dithioesters, which proceeds by a thio-Claisen rearrangement of S-allylic ketene dithioacetals initially formed.
发现 1-Chloro-2-methyl-N,N-四亚甲基丙烯胺是一种很好的缩合试剂,可用于烯丙醇与二硫酯的烯醇锂在温和条件下的区域选择性偶联反应,得到 γ,δ-不饱和二硫酯,该反应通过以下方式进行: S-烯丙基乙烯酮二硫缩醛的硫代-克莱森重排最初形成。