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Atroposelective formation of dibenz[c,e]azepines via intramolecular direct arylation with centre-axis chirality transfer†
Caroline A. Cheetham,Richard S. Massey,Silvain L. Pira,Robin G. Pritchard,Timothy W. Wallace
Organic & Biomolecular Chemistry Pub Date : 01/26/2011 00:00:00 , DOI:10.1039/C0OB00889C
Abstract

5-Substituted 6,7-dihydrodibenz[c,e]azepines, a class of secondary amine incorporating a centre-axis chirality relay, are accessible from 1-substituted N-(2-bromobenzyl)-1-phenylmethanamines via N-acylation and ring-closing intramolecular direct arylation. The ring closure proceeds with high atropodiastereoselectivity due to strain effects that are induced by trigonalisation of the nitrogen atom, as predicted using molecular mechanics calculations.

Graphical abstract: Atroposelective formation of dibenz[c,e]azepines via intramolecular direct arylation with centre-axis chirality transfer
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