The generation of α,βâ¶Î³,δ-unsaturated azomethine ylides 8 is described, starting from N-substituted α-amino acids 7 and aldehydes 6, 12. These azomethine ylides undergo a 1,7-electrocyclisation, followed by a [1,5]-hydrogen shift, to give the dihydrobenzazepines 10aâf and 13.
描述了从N-取代的
α-氨基酸7和醛6、12出发生成α,β γ,δ-不饱和
叠氮甲
亚胺叶立德8的过程。这些
叠氮甲
亚胺叶立德经历1,7-电环化反应,随后发生[1,5]-氢迁移,得到二氢苯并氮杂草10a–f和13。