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Palladium-catalyzed regio- and chemoselective ortho-benzylation of C–H bond using a functionalizable primary amide directing group: a concise synthesis of dibenzo[b,e]azepin-6-ones†
Joydev K. Laha,Pooja U. Shah,Krupal P. Jethava
Chemical Communications Pub Date : 07/19/2013 00:00:00 , DOI:10.1039/C3CC43835J
Abstract

A palladium-catalyzed regio- and chemoselective direct benzylation of primary benzamides with 2-bromobenzyl bromides under a mild basic condition has been developed affording various substituted diarylmethanes in good yields. Furthermore, the directing amide group (–CONH2) was subjected to intramolecular N-arylation with the aryl bromide moiety present in diarylmethanes leading to a concise synthesis of dibenzoazepinones.

Graphical abstract: Palladium-catalyzed regio- and chemoselective ortho-benzylation of C–H bond using a functionalizable primary amide directing group: a concise synthesis of dibenzo[b,e]azepin-6-ones
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