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Synthesis of New Chiral Ligands and Their Group VI Metal Alkylidene Complexes

Fujimura, Osamu and de la Mata, F. Javier and Grubbs, Robert H. (1996) Synthesis of New Chiral Ligands and Their Group VI Metal Alkylidene Complexes. Organometallics, 15 (7). pp. 1865-1871. ISSN 0276-7333. http://resolver.caltech.edu/CaltechAUTHORS:20180518-162952014

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Abstract

The new chelating chiral diol ligands (1S,2S)- and (1R,2R)-1,2-bis(2-hydroxy-2,2-bis(trifluoromethyl)ethyl)cyclopentane (TBEC-H_2; 1) were synthesized. The dilithium alkoxide of TBEC was reacted with Mo(CHCMe_2Ph)(NAr)(OTf)_2dme (2; Ar = 2,6-(i-Pr)_2C_6H_3) to give the chiral alkylidene complex Mo(CHCMe_2Ph)(NAr)(TBEC) (3). The ligand also reacts with W(η^2-diphenylcyclopropene)Cl_2(O)[P(OMe)_3]_2 (4), W(CHCHCOCH2CH2CH2O)(O)Cl_2[P(OMe)_3] (5), and W(CHCHCPh_2)(NAr)Cl_2[P(OMe)_3]_2 (6; Ar = 2,6-(i-Pr)_2C_6H_3) to the give stable corresponding tungsten oxo vinylalkylidene complexes and tungsten amide vinylalkylidene complexes, respectively. These group VI alkylidene complexes show excellent catalytic activity in both ring-opening metathesis polymerization and in ring-closing metathesis processes.


Item Type:Article
Related URLs:
URLURL TypeDescription
https://dx.doi.org/10.1021/om950724xDOIArticle
ORCID:
AuthorORCID
Grubbs, Robert H.0000-0002-0057-7817
Additional Information:© 1996 American Chemical Society. Received September 11, 1995. Support has been provided by Ube Industries, Ltd. of Japan (grant to O.F.), the Ministerio de Educacion y Ciencia of Spain (grant to F.J.M.), and the National Institutes of Health (grant to R.H.G.). We thank Dr. Jerome P. Claverie for helpful discussions.
Funders:
Funding AgencyGrant Number
Ube Industries, Ltd.UNSPECIFIED
Ministerio de Educación y Ciencia (MEC)UNSPECIFIED
NIHUNSPECIFIED
Record Number:CaltechAUTHORS:20180518-162952014
Persistent URL:http://resolver.caltech.edu/CaltechAUTHORS:20180518-162952014
Official Citation:Synthesis of New Chiral Ligands and Their Group VI Metal Alkylidene Complexes Osamu Fujimura, F. Javier de la Mata, and Robert H. Grubbs Organometallics 1996 15 (7), 1865-1871 DOI: 10.1021/om950724x
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:86481
Collection:CaltechAUTHORS
Deposited By: George Porter
Deposited On:21 May 2018 16:17
Last Modified:21 May 2018 16:17

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