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. doi:10.1021/om950724x. https://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.
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| 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. | ||||||||
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| Issue or Number: | 7 | ||||||||
| DOI: | 10.1021/om950724x | ||||||||
| Record Number: | CaltechAUTHORS:20180518-162952014 | ||||||||
| Persistent URL: | https://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: | 15 Nov 2021 20:39 |
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