Synthesis of 4, 6-dialkyl-1,3-dioxins. Versatile intermidiates for the preparation of (E)-alkenones, anti,anti-1, 2, 3-triols and syn-1, 3-diols
作者:Raymond L. Funk、Gary L. Bolton
DOI:10.1016/s0040-4039(00)86663-0
日期:1988.1
The title compounds 4 are prepared from 4-alkyldioxins 2 via a metalation, alkylation sequence. The dialkyl dioxins 4 are thermally labile (providing enones) and undergo highly stereoselective hydroboration or hydrogenation reactions to provide anti, anti-1, 2, 3-triols and syn, 1, 3-diols, respectively. This methodology has been exploited in the synthesis of (±)-endo-1, 3-dimethyl-2,9-dioxabicyclo[3
标题化合物4由4-烷基二恶英2经金属化,烷基化顺序制备。二烷基二恶英4是热不稳定的(提供烯酮),并经历高度立体选择性的硼氢化或氢化反应以分别提供抗,抗-1、2、3-三醇和syn,1、3-二醇。该方法已被用于合成(±)-endo-1、3-二甲基-2,9-二氧杂双环[3.3.1]壬烷。