Reaction of di(bromomagnesio)alkanes with unsymmetrically substituted cyclic anhydrides
作者:Persephone Canonne、Gilles Lemay、Denis Bélanger
DOI:10.1016/s0040-4039(00)93679-7
日期:1980.1
Alkylated γ-spirolactones were prepared in one-step reactions in high yields from butane-1,4-diyl and pentane-1,5 diyldimagnesium dibromides and substituted cyclic anhydrides in tetrahydrofuran. In the light of experimental findings electronic and steric factors influence the regiospecificity of this reaction.
烷基化的γ-螺内酯可通过一步反应以高产率从四氢呋喃中的1,4-丁二基戊烷和1,,5-戊基二溴化二芳基二镁和取代的环酐中高收率制备。根据实验结果,电子和空间因素影响该反应的区域特异性。