Dimethylzinc-Mediated Addition of Alkenylzirconocenes to α-Keto and α-Imino Esters

Peter Wipf* and Corey R. J. Stephenson
Department of Chemistry, University of Pittsburgh, Pittsburgh, Pennsylvania 15260
Org. Lett., 2003, 5 (14), pp 2449–2452
DOI: 10.1021/ol0347141
Publication Date (Web): June 10, 2003
Copyright © 2003 American Chemical Society
*

In papers with more than one author, the asterisk indicates the name of the author to whom inquiries about the paper should be addressed.

, pwipf+@pitt.edu

Abstract

Abstract Image

Hydrozirconation of alkynes followed by in situ transmetalation to dimethylzinc and 1,2-addition to activated ketones and N-diphenylphosphinoylimines leads to tertiary allylic alcohols and amines in high overall yield. With 8-phenylmenthol as the chiral auxiliary, si-face attack proceeds in good to excellent diastereoselectivities.

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History

  • Published In Issue July 10, 2003
  • Received April 29, 2003

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