next cycle where it serves as the reductant for C-C bond formation. This strategy represents a conceptually unique approach to transfer-hydrogenative C-C bond formation, thus providing examples of reductive heterocyclizations where hydrogen embedded within an alcohol leaving group facilitates turnover.
丙烯酸苄酯与活化的酮和
亚胺在
镍催化下偶联,分别生成
γ-丁内酯和内酰胺。内酯化/内酰胺化过程中释放的
苯甲醇副产物被传递到下一个循环,在其中充当 CC 键形成的还原剂。该策略代表了一种概念上独特的转移氢化CC键形成方法,从而提供了还原性杂环化的例子,其中氢嵌入醇离去基团中促进周转。