Increased ring closing metathesis activity of ruthenium-based olefin metathesis catalysts coordinated with imidazolin-2-ylidene ligands

The novel air and water tolerant, imidazolinylidene-substituted ruthenium-based complex 3, has been prepared starting from RuCl 2(CHPh)(PCy 3) 2 2 and shown to exhibit increased ring-closing metathesis activity at elevated temperature compared to that of the parent complex 2. Di-, tri-, and even te...

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Published inTetrahedron letters Vol. 40; no. 12; pp. 2247 - 2250
Main Authors Scholl, Matthias, Trnka, Tina M., Morgan, John P., Grubbs, Robert H.
Format Journal Article
LanguageEnglish
Published OXFORD Elsevier Ltd 19.03.1999
Elsevier
Subjects
Chemistry
Chemistry, Organic
Physical Sciences
Science & Technology
POLYMERIZATION
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Summary:The novel air and water tolerant, imidazolinylidene-substituted ruthenium-based complex 3, has been prepared starting from RuCl 2(CHPh)(PCy 3) 2 2 and shown to exhibit increased ring-closing metathesis activity at elevated temperature compared to that of the parent complex 2. Di-, tri-, and even tetra-substituted cycloolefins were successfully prepared from corresponding diene precursors using catalytic amounts of 3 in moderate to excellent yields. The novel air and water tolerant, imidazolin-2-ylidene-substituted ruthenium-based complex 3, has been prepared starting from RuCl 2(CHPh)(PCy 3) 2 2 and shown to exhibit increased ring-closing metathesis activity at elevated temperature compared to that of the parent complex 2.
ISSN:0040-4039
1873-3581
DOI:10.1016/S0040-4039(99)00217-8