Synthesis 2008(7): 1121-1125  
DOI: 10.1055/s-2008-1032118
PAPER
© Georg Thieme Verlag Stuttgart · New York

Facile Synthesis of Functionalized Oligophenothiazines via One-Pot Bromine-Lithium Exchange-Borylation-Suzuki Coupling (BLEBS)

Adam W. Franz, Thomas J. J. Müller*
Lehrstuhl für Organische Chemie, Institut für Organische Chemie und Makromolekulare Chemie, Heinrich-Heine-Universität Düsseldorf, Universitätsstr. 1, 40225 Düsseldorf, Germany
Fax: +49(211)8114324; e-Mail: ThomasJJ.Mueller@uni-duesseldorf.de;
Further Information

Publication History

Received 26 October 2007
Publication Date:
06 March 2008 (online)

Abstract

The bromine-lithium exchange in bromophenothiazines followed by transmetalation with trimethyl borate and addition of palladium catalyst, 1.2 equivalents of a base, and an aryl halide yields the cross-coupling products in moderate to very good yields.

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Franz, A. W.; Stoycheva, S.; Himmelhaus, M.; Müller, T. J. J., manuscript in preparation.