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. 2009 Jan 14;131(1):24-5.
doi: 10.1021/ja806218x.

Structure and reactivity of alkynyl ruthenium alkylidenes

Sang Young Yun  1 , Mansuk Kim, Daesung Lee, Donald J Wink
Affiliations

Structure and reactivity of alkynyl ruthenium alkylidenes

Sang Young Yun et al. J Am Chem Soc. .

Abstract

The isolation and structural characterization of alkynyl Ru-alkylidene species has been elusive owing to their rapid metallotropic shift and fast turnover. The enyne ring-closing metathesis and relay metathesis provides the platform to form a variety of alkynyl Ru-alkylidene species possessing a sterically and electronically different substituent on the carbenic carbon, which allowed their regio-controlled trapping and structural characterization.

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Figures

Scheme 1
Scheme 1
Regioselective Trapping of Alkynyl Ru-Alkylidenes
Scheme 2
Scheme 2
Reactivity Difference of Alkynyl Ru-Alkylidenes
Scheme 3
Scheme 3
Formation of a Chelated Alkynyl Ru-Alkylidene
Scheme 4
Scheme 4
Reactivity of Isolated Alkynyl Ru-Alkylidene 10b
See this image and copyright information in PMC

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