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Synthesis 2006(3): 533-539
DOI: 10.1055/s-2006-926270
DOI: 10.1055/s-2006-926270
PAPER
© Georg Thieme Verlag Stuttgart · New York
6-Chloro- and 6-Bromo-Substituted Steroids in the Suzuki-Miyaura Cross-Coupling Reaction. A Convenient Route to Potential Aromatase Inhibitors
Further Information
Received
19 August 2005
Publication Date:
11 January 2006 (online)
Publication History
Publication Date:
11 January 2006 (online)
Abstract
Chlorine at an sp2-carbon in steroids has been shown to be reactive in Suzuki-Miyaura cross-coupling reactions with either Ni or Pd catalysts. The coupling of analogous 6-bromo derivatives has also been demonstrated to be applicable to a wider scope of substrates. The Suzuki-Miyaura arylation of 6-bromo-Δ3,5-steroid enol ethers with subsequent hydrolysis is a useful route to 6-arylated steroids bearing aryl at a saturated carbon.
Key words
cross-coupling - palladium - steroids - Suzuki reaction - nickel
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