Synlett 2003(1): 0012-0021
DOI: 10.1055/s-2003-36213
ACCOUNT
© Georg Thieme Verlag Stuttgart · New York

Enones as Latent Enolates in Catalytic Processes: Catalytic Cycloreduction, Cycloaddition and Cycloisomerization

Ryan R. Huddleston, Michael J. Krische*
University of Texas at Austin, Department of Chemistry and Biochemistry, Austin, Texas 78712
e-Mail: mkrische@mail.utexas.edu;
Further Information

Publication History

Received 21 February 2002
Publication Date:
18 December 2002 (online)

Abstract

The development of catalytic processes predicated on the use of enones as latent enolates circumvents the utilization of chemically labile enol derivatives while enabling regioselective enolate formation. In this account, an overview of this emerging area of catalytic synthetic methodology is presented with an emphasis on intramolecular processes.

  • 1 Introduction: Enones as Latent Enolates

  • 2 Catalytic Hydrometallative Methods

  • 2.1 Reductive Aldol Processes

  • 2.2 Reductive Michael Processes

  • 2.3 Related Catalytic Processes

  • 3 Enones as Homo-Enolates

  • 3.1 Homo-Aldol Cycloreduction

  • 3.2 [2+2]Cycloaddition

  • 4 Nucleophilic Organocatalytic Methods

  • 4.1 Aldol Cycloisomerization (Intramolecular Baylis-Hillman Reaction)

  • 4.2 Michael Cycloisomerization (Intramolecular Rauhut-
    Currier Reaction)

  • 5 Outlook

18

The structural assignment of Co(dpm)2 was established by single crystal x-ray diffraction.