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A Cyclometalated Aryloxy(chloro)neopentylidenetungsten Complex: A Highly Active and Stereoselective Catalyst for the Metathesis of cis ‐ and trans ‐2‐Pentene, Norbornene, 1‐Methyl‐norbornene, and Ethyl Oleate
Author(s) -
Couturier JeanLuc,
Paillet Christophe,
Leconte Michel,
Basset JeanMarie,
Weiss Karin
Publication year - 1992
Publication title -
angewandte chemie international edition in english
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 0570-0833
DOI - 10.1002/anie.199206281
Subject(s) - norbornene , metathesis , catalysis , stereoselectivity , intramolecular force , chemistry , ligand (biochemistry) , electrophile , stereochemistry , salt metathesis reaction , medicinal chemistry , organic chemistry , polymerization , biochemistry , polymer , receptor
The intramolecular CH activation of a diphenylphenoxy ligand by an electrophilic W VI center is the crucial step in the synthesis of the extremely active and stereoselective metathesis catalyst 1 formed from [WCl 3 (CCMe 3 )(dme)] or [WCl 4 (O‐2,6‐C 6 H 3 Ph 2 ) 2 ]. In the metathesis of ethyl oleate, replenishing of the catalyst is not required; 500 moles of substrate per mole of 1 are converted in one hour at 25°C.
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