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Synthesis 2010(17): 2926-2930
DOI: 10.1055/s-0030-1258141
DOI: 10.1055/s-0030-1258141
PAPER
© Georg Thieme Verlag
Stuttgart ˙ New York
An Improved Method for the Synthesis of Carbazolones by Palladium/Copper-Catalyzed Intramolecular Annulation of N-Arylenaminones
Further Information
Publication History
Received
8 January 2010
Publication Date:
30 June 2010 (online)


Abstract
An improved method for the synthesis of carbazolones via the condensation of arylamines with 1,3-cyclodiketones followed by intramolecular oxidative cyclization catalyzed by palladium acetate and copper acetate in ethanol under an oxygen atmosphere was established. The improved method has the advantage of easily available starting materials and affords good yields.
Key words
carbazolones - intramolecular oxidative cyclization - oxygen - palladium acetate - copper acetate