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Synlett 1991; 1991(9): 625-626
DOI: 10.1055/s-1991-20818
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Ultrasound-Assisted Cleavage of N-N Bonds in Hydrazines by Raney Nickel

Alex Alexakis* , Nathalie Lensen, Pierre Mangeney
  • *Laboratoire de Chimie des Organo-Eléments, CNRS UA 473, Université P. et M. Curie, 4 Place Jussieu, F-75252 Paris Cedex 05, France
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Publication Date:
07 March 2002 (online)

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The reductive N-N cleavage of N-substituted N′,N′-dimethylhydrazines to give primary amines by Raney nickel/hydrogen is conveniently performed under atmospheric pressure of hydrogen by sonication of the reaction vessel in a simple ultrasound cleaner. Sterically hindered hydrazines are also cleaved and no racemization or debenzylation is observed.