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Synthesis 2009(10): 1651-1654
DOI: 10.1055/s-0029-1216642
DOI: 10.1055/s-0029-1216642
PAPER
© Georg Thieme Verlag
Stuttgart ˙ New York
Synthesis of Polyhalogenated 2-(Phenylamino)pyridines by Thermal Amination Reactions
Further Information
Received
3 January 2009
Publication Date:
14 April 2009 (online)
Publication History
Publication Date:
14 April 2009 (online)
Abstract
Amination reactions of 2,6-dibromopyridine with a variety of halogenated anilines were achieved thermally when 2,2,6,6-tetramethylpiperidine was employed as an auxiliary base. The solvent-free thermal conversion was superior to palladium-catalyzed transformations of such substrates since no high-molecular-weight byproducts were observed.
Key words
aminations - nucleophilic aromatic substitutions - pyridines - tetramethylpiperidine - anilines - polyhalogenated
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