The diastereodivergent assembly of polyhydro-1,6-naphthyridines from o-TosylNH aldimines and 2,4-dienyl carbonates has been realized by ligand-controlled auto-tandem palladium catalysis, through an N-allylation, vinylogous addition, π-σ-π isomerization, and N-allylation cascade. Further tuning of the ligands even allowed regiodivergent azetidine or chemodivergent β-H elimination products to be obtained
通过
配体控制的自串联
钯催化,通过 N-烯丙基化、
乙烯基加成、π-σ-π,实现了由o - TosylNH 醛
亚胺和 2,4-二烯基
碳酸酯合成polyhydro-1,6-naphthyridines 的非对映发散组装异构化和N-烯丙基化级联。
配体的进一步调整甚至允许获得区域发散的氮杂
环丁烷或
化学发散的β-H消除产物。