β-Alkoxycarbonyl-γ-lactams and γ-alkoxycarbonyl-δ-lactams were synthesized via a conjugate alkylation/Mannich reaction/lactamization tandem reaction of unsaturated dicarboxylates with diethyl zinc and aldimines. The high yield, the ready availability of the reagents, and especially the high diastereoselectivity are promising characteristics of the approach that allows access to functionalized lactams.
β-烷氧羰基-γ-内酰胺和γ-烷氧羰基-δ-内酰胺通过不饱和二羧酸酯与二乙基锌和醛亚胺的共轭烷基化/Mannich反应/内酰化串联反应合成。高产率、试剂易得性以及尤其是高对映选择性是这种方法的有希望的特征,使得可以获得官能化内酰胺。