Chemistry Letters
Online ISSN : 1348-0715
Print ISSN : 0366-7022
ISSN-L : 0366-7022
Letter
Selective Hydrosilylation of 1-Alkynes Using Iridium Catalyst with Biphosphinine Ligand
Yoshihiro MiyakeEigo IsomuraMasahiko Iyoda
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2006 Volume 35 Issue 8 Pages 836-837

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Abstract

The iridium-catalyzed hydrosilylation of alkynes in the presence of 4,4′,5,5′-tetramethylbiphosphinine (tmbp) has been explored. The hydrosilylation of alkynes in the presence of tmbp proceeds effectively to give β-(E)-vinylsilanes highly selectively in moderate to high yields, whereas a similar hydrosilylation in the absence of tmbp produces β-(Z)-vinylsilanes selectively. The stereoselectivity of these reactions suggests the importance of the electron-withdrawing properties of tmbp coordinated to iridium.

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© 2006 The Chemical Society of Japan
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