Synthesis 2007(14): 2065-2092  
DOI: 10.1055/s-2007-983747
REVIEW
© Georg Thieme Verlag Stuttgart · New York

Organocatalytic Enantioselective Michael and Hetero-Michael Reactions

Jose L. Vicario*, Dolores Badía, Luisa Carrillo
Departamento de Química Orgánica II, Facultad de Ciencia y Tecnología, University of the Basque Country, P.O. Box 644, 48080 Bilbao, Spain
Fax: +34(94)6015454; e-Mail: joseluis.vicario@ehu.es;
Further Information

Publication History

Received 12 April 2007
Publication Date:
03 July 2007 (online)

Abstract

The enantioselective methods reported to date for carrying out conjugate additions of carbon- and heteroatom-centered nucleophiles to electron-deficient olefins, using small chiral organic molecules as catalysts, are reviewed.

1 Introduction

2 Organocatalytic Enantioselective Michael Reactions

2.1 Reactions Proceeding via Enamine Intermediates

2.2 Reactions Proceeding via Iminium Intermediates

2.3 Reactions Proceeding via Enamine and Iminium Intermediates­

2.4 Reactions Catalyzed by Chiral Thioureas

2.5 Reactions Catalyzed by Cinchona Alkaloids

2.6 Reactions under Phase-Transfer Conditions

2.7 Reactions Catalyzed by Other Organocatalysts

3 Organocatalytic Enantioselective Conjugate Friedel-Crafts Alkylations

4 Organocatalytic Enantioselective Conjugate Hydrogen-Transfer Reactions

5 Organocatalytic Enantioselective Hetero-Michael Reactions­

5.1 Sulfa-Michael Reactions

5.2 Aza-Michael Reactions

5.3 Oxa-Michael Reactions

5.4 Phospha-Michael Reactions

6 Miscellaneous Organocatalytic Enantioselective Conjugate Additions

7 Conclusions and Outlook