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Palladium-catalyzed one pot 2-arylquinazoline formation via hydrogen-transfer strategy†
Huamin Wang,Hui Chen,Ya Chen,Guo-Jun Deng
Organic & Biomolecular Chemistry Pub Date : 08/06/2014 00:00:00 , DOI:10.1039/C4OB01296H
Abstract

The palladium catalytic system was first applied to 2-arylquinazoline synthesis via hydrogen transfer methodology. Various (E)-2-nitrobenzaldehyde O-methyl oximes reacted easily with alcohols or benzyl amines to provide N-heterocyclic compounds in good to high yields. Similarly, the heterocyclic products could be prepared by the reaction of 1-(2-nitrophenyl)ethanone, urea and benzyl alcohols. In these reactions, the nitro group was reduced in situ by hydrogen generated from the alcohol dehydrogenation step.

Graphical abstract: Palladium-catalyzed one pot 2-arylquinazoline formation via hydrogen-transfer strategy
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