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Rendering Schrock‐type Molybdenum Alkylidene Complexes Air Stable: User‐Friendly Precatalysts for Alkene Metathesis
Author(s) -
Heppekausen Johannes,
Fürstner Alois
Publication year - 2011
Publication title -
angewandte chemie international edition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 1433-7851
DOI - 10.1002/anie.201102012
Subject(s) - alkene , molybdenum , adduct , metathesis , olefin metathesis , catalysis , chemistry , ruthenium , organic chemistry , computer science , combinatorial chemistry , polymerization , polymer
A matter of convenience : Schrock molybdenum alkylidenes are amongst the most powerful olefin metathesis catalysts known to date, but their sensitivity to air and moisture mandates their handling in a glove‐box or by Schlenk techniques. This inconvenience is circumvented by using the corresponding phenanthroline‐ or bipyridine adducts, which are bench‐stable and hence very user‐friendly. The active species can be liberated from these precatalysts in uncompromised form on treatment with ZnCl 2 in toluene (see scheme).