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Synthesis 2006(23): 3955-3962
DOI: 10.1055/s-2006-950336
DOI: 10.1055/s-2006-950336
PAPER
© Georg Thieme Verlag Stuttgart · New York
Bis(cyclohexanone) Oxalyldihydrazone/Copper(II) Oxide - A Novel and Efficient Catalytic System for Ullmann-type C-N Coupling in Pure Water
Further Information
Received
16 June 2006
Publication Date:
02 November 2006 (online)
Publication History
Publication Date:
02 November 2006 (online)
Abstract
Aminations of aryl halides were conducted under fast copper-bis(cyclohexanone) oxalyldihydrazone catalysis in pure water with both temperature-controlled microwave heating and traditional heating. With a reaction time of five minutes under microwave heating at 130 °C or at reflux for 10 hours, both electron-rich and electron-deficient aryl halides reacted with various amines to provide fair to good yields of the corresponding anilines.
Key words
bis(cyclohexanone) oxalyldihydrazone - aminations - copper - coupling - catalysis
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