α‐CH bond functionalization and reductive N‐alkylation render this transformation redox‐neutral. This redox‐Mannich process provides regioisomers of classic Reinhoudt reaction products as an entry to the tetrahydroprotoberberine core, enabling the synthesis of (±)‐thalictricavine and its epimer. An unusually mild amine‐promoted dealkoxycarbonylation was discovered in the course of these studies.
                                    环胺(例如
吡咯烷)与 2-甲酰基
丙二酸酯发生氧化还原成环反应。同时发生的氧化胺 α-C  H 键功能化和还原性 N-烷基化使这种转化呈氧化还原中性。这种氧化还原-曼尼希过程提供了经典 Reinhoudt 反应产物的区域异构体作为四氢原
小檗碱核心的入口,从而能够合成 (±)-thalictriccavine 及其差向异构体。在这些研究过程中发现了异常温和的胺促进的脱烷氧基羰基化。