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Synthesis 2008(7): 1121-1125
DOI: 10.1055/s-2008-1032118
DOI: 10.1055/s-2008-1032118
PAPER
© Georg Thieme Verlag Stuttgart · New YorkFacile Synthesis of Functionalized Oligophenothiazines via One-Pot Bromine-Lithium Exchange-Borylation-Suzuki Coupling (BLEBS)
Further Information
Received
26 October 2007
Publication Date:
06 March 2008 (online)
Publication History
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.
Key words
borylations - cross-coupling - heterocycles - metalation - oligomers - one-pot reactions
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References
Franz, A. W.; Stoycheva, S.; Himmelhaus, M.; Müller, T. J. J., manuscript in preparation.