Synthesis 2015; 47(07): 913-923
DOI: 10.1055/s-0034-1379968
short review
© Georg Thieme Verlag Stuttgart · New York

Recent Advances in Catalytic Stereocontrolled Cycloaddition with Terminal Propargylic Compounds

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Publikationsverlauf

Received: 26. November 2014

Accepted after revision: 11. Dezember 2014

Publikationsdatum:
28. Januar 2015 (online)


Graphical Abstract

Abstract

Terminal propargylic compounds containing an alkyne unit and an alcohol or ester group in the propargylic position have a fairly acidic acetylenic hydrogen atom; this makes them versatile substrates for further chemical transformation. Some transition metals such as ruthenium or copper exhibit specific affinity for terminal propargylic compounds, generating dielectrophilic ruthenium– or copper–allenylidene complexes that show high potential for stereoselective cycloaddition with various bis-nucleophiles. In this review, we highlight this emerging field of catalytic stereoselective cycloaddition with terminal propargylic compounds. Examples of ruthenium-, copper-, palladium-, and gold-catalyzed cycloaddition are given in the article, along with mechanistic considerations.

1 Introduction

2 Ruthenium–Allenylidene Complexes in Enantioselective Cycloaddition

3 Copper–Allenylidene Complexes in Enantioselective Cycloaddition

4 Palladium–π-Propargyl Complexes in Stereoselective Cycloaddition

5 Gold–Carbenoid Complexes in Stereoselective Cycloaddition

6 Summary and Outlook