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Synthesis 1991; 1991(6): 460-462
DOI: 10.1055/s-1991-26493
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Regio- and Stereoselective Azidation of 19-Norsteroids

A. Guy* , J. Doussot, M. Lemaire
  • *Laboratoire de Chimie Organique (URA 1103), Conservatoire National des Arts et Métiers, 292, rue Saint-Martin, F-75141 Paris Cedex 03, France
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Publication History

Publication Date:
29 April 2002 (online)

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The proton at C-9 of 3-methoxyestra-1,3,5(10)-trienes 1-4 was replaced by an azido group regio- and stereospecifically in one step by reaction with hydrazoic acid in chloroform in the presence of 2,3-dichloro-5,6-dicyano-1,4-benzoquinone (DDQ).