Synthesis 2003(1): 0001-0018
DOI: 10.1055/s-2003-36243
REVIEW
© Georg Thieme Verlag Stuttgart · New York

Enyne Metathesis Catalyzed by Ruthenium Carbene Complexes

Carina Storm Poulsen, Robert Madsen*
Department of Chemistry, Building 201, Technical University of Denmark, 2800 Lyngby, Denmark
Fax: +4545933968; e-Mail: rm@kemi.dtu.dk;
Further Information

Publication History

Received 28 October 2002
Publication Date:
18 December 2002 (online)

Abstract

Enyne metathesis combines an alkene and an alkyne into a 1,3-diene. The first enyne metathesis reaction catalyzed by a ruthenium carbene complex was reported in 1994. This review covers the advances in this transformation during the last eight years with particular emphasis on methodology development and synthetic applications.

  • 1 Introduction

  • 2 Catalysts and Mechanism

  • 3 Ring-Closing Enyne Metathesis

  • 3.1 Metathesis of Substituted Enynes and the Influence of an Ethylene Atmosphere

  • 3.2 Formation of Different Ring-Sizes

  • 3.3 Tandem Metathesis Reactions

  • 3.4 Tandem Metathesis - Cycloaddition Reactions

  • 3.5 Metathesis of Carbohydrate-Derived Enynes

  • 3.6 Metathesis of Amino Acid- and β-Lactam-Derived Enynes

  • 3.7 Enyne Metathesis in Natural Product Syntheses

  • 4 Cross Enyne Metathesis

  • 4.1 Metathesis with Substituted Alkynes and Ethylene Gas

  • 4.2 Metathesis with Substituted Alkynes and Alkenes

  • 5 Concluding Remarks