A Novel Construction of 2-Benzazepine Scaffold Based on TiCl4-Mediated Tandem Mannich ReactionâAromatic Electrophilic Substitution
作者:Liangxi Li、Zhiming Li、Quanrui Wang
DOI:10.1002/hlca.200900107
日期:2009.12
A novel construction of 2‐benzazepine derivatives based on TiCl4‐mediated tandem Mannich reaction of electron‐rich benzyl iminium ions with alkenyl ethers and Friedel–Crafts‐type alkylation is described. The protocol is amenable to provide the tricyclic furo[3,2‐d][2]benzazepine and pyrano[3,2‐d][2]benzazepine derivatives, respectively, with 2,3‐dihydrofuran or 3,4‐dihydro‐2H‐pyran as the substrates
描述了一种基于TiCl 4介导的富电子苄基亚胺离子与链烯基醚和Friedel – Crafts型烷基化的串联曼尼希反应的新型2-苯并ze庚因衍生物的结构。该协议适用于分别为三环呋喃[3,2- d ] [2]苯并and庚因和吡喃并[3,2- d ] [2]苯并ze庚因衍生物提供2,3-二氢呋喃或3,4-二氢呋喃。 2 H-吡喃为底物。