A new type of coupling between unactivated olefins and nonstabilized alkyl radicals was achieved, which enabled the first intermolecular Heck-type reaction of cycloketone oxime esters and unactivated alkenes. This directing-group-based strategy was compatible with various unactivated alkenes and cyclobutanone-, cyclopentanone-, and cyclohexanone-derived oxime esters. Density functional theory calculations
实现了未活化烯烃和不稳定烷基自由基之间的新型偶联,这使得环酮
肟酯和未活化烯烃的第一个分子间Heck型反应成为可能。这种基于导向基团的策略与各种未活化的烯烃和
环丁酮、
环戊酮和
环己酮衍生的
肟酯兼容。密度泛函理论计算表明,优异的区域选择性和良好的非对映选择性可归因于
2-丁醇辅助的协同 H-OBz 消除构象应变
金属环过渡态。