Diastereoselective Dealkoxycarbonylation of Sulfur-Substituted Dialkyl Cyclopropane-1,1-dicarboxylates
作者:Angela M. Bernard、Giovanni Cerioni、P. Paolo Piras、Gianfranco Seu
DOI:10.1055/s-1990-27037
日期:——
In the dealkoxycarbonylation of dimethyl 2,2-dimethylcyclo- propane-1,1-dicarboxylate, 3-alkylthio or 3-arylthio substituents induce moderate diastereoselection. The analogous dealkoxycarbonylation of 3-alkylsulfonyl- or 3-arylsulfonyl-substituted cyclopropanes leads to an E diastereoselectivity of 100%.
在 2,2-二甲基环丙烷-1,1-二甲酸二甲酯的脱烷氧基羰基化反应中,3-烷硫基或 3-芳硫基取代基引起了中等程度的非对映选择性。类似的 3-烷基磺酰基或 3-芳基磺酰基取代环丙烷的脱烷氧基羰基反应的非对映选择性为 100%。