Synthesis 2012; 44(9): 1410-1416
DOI: 10.1055/s-0031-1290504
paper
© Georg Thieme Verlag Stuttgart · New York

A Concise Synthesis of 3-Arylated Di- and Tetrahydro-2H-2-benzazepin-1-ones; A New Synthetic Approach to the Homoprotoberberine Framework

Stéphane Lebrun
a   Université Lille Nord de France, 59000 Lille, France, Fax: +33(3)20436309   Email: axel.couture@univ-lille1.fr
b   USTL, Laboratoire de Chimie Organique Physique, EA CMF 4478, Bâtiment C3(2), 59655 Villeneuve d’Ascq Cedex, France
,
Axel Couture*
a   Université Lille Nord de France, 59000 Lille, France, Fax: +33(3)20436309   Email: axel.couture@univ-lille1.fr
c   CNRS, UMR 8181 ‘UCCS’, Bâtiment C3(2), 59655 Villeneuve d’Ascq Cedex, France
,
Eric Deniau
a   Université Lille Nord de France, 59000 Lille, France, Fax: +33(3)20436309   Email: axel.couture@univ-lille1.fr
b   USTL, Laboratoire de Chimie Organique Physique, EA CMF 4478, Bâtiment C3(2), 59655 Villeneuve d’Ascq Cedex, France
,
Pierre Grandclaudon
a   Université Lille Nord de France, 59000 Lille, France, Fax: +33(3)20436309   Email: axel.couture@univ-lille1.fr
b   USTL, Laboratoire de Chimie Organique Physique, EA CMF 4478, Bâtiment C3(2), 59655 Villeneuve d’Ascq Cedex, France
› Author Affiliations
Further Information

Publication History

Received: 13 December 2011

Accepted after revision: 14 February 2012

Publication Date:
16 March 2012 (online)


Abstract

A variety of 3-arylated di- and tetrahydro-2H-2-benz­azepin-1-ones were efficiently assembled through a sequence involving a Suzuki–Miyaura cross-coupling reaction with enol phosphates derived from the corresponding benzazepine-1,3-di­ones. This technique has been further exploited for the construction of the homoprotoberberine skeleton, which was readily accessed by intramolecular carbocationic annulation reaction applied to a suitably substituted precursor.

 
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