Synthesis 2002(11): 1564-1570
DOI: 10.1055/s-2002-33347
PAPER
© Georg Thieme Verlag Stuttgart · New York

Carboxylate Derivatives of Oligopyridines Bearing Bromomethyl Groups

Sébastien Bedel, Gilles Ulrich*, Claude Picard, Pierre Tisnès
Laboratoire de Synthèse et Physico-chimie de Molécules d"Intérêt Biologique, UMR 5068, Université Paul Sabatier, 118 rte de Narbonne 31062 Cedex 4, Toulouse, France
Fax: +33(5)61556011; e-Mail: ulrich@chimie.ups-tlse.fr ;
Further Information

Publication History

Received 2 February 2002
Publication Date:
23 August 2002 (online)

Abstract

The synthesis of various oligopyridines possessing a carboxylate and at least one bromoethyl group is reported. The bipyridine and terpyridine cores were constructed in good yields via a Stille cross-coupling, starting from bromopicolines and ethyl bromopicolinate. The bromomethyl function was obtained by free radical bromination using NBS in benzene or bromine in benzene/water biphasic mixture. The building of two model podands by nucleophilic displacement of benzylic bromine by an amine or by a phenol group is described.