A CP2TICL2-ME3AL (1 4)-REAGENT SYSTEM - AN EFFICIENT REAGENT FOR GENERATION OF ALLYLIC TITANOCENE DERIVATIVES FROM VINYL HALIDES, VINYL ETHERS AND CARBOXYLIC ESTERS/

Authors
HANZAWA Y KOWASE N MOMOSE S TAGUCHI T
Citation
Y. Hanzawa et al., A CP2TICL2-ME3AL (1 4)-REAGENT SYSTEM - AN EFFICIENT REAGENT FOR GENERATION OF ALLYLIC TITANOCENE DERIVATIVES FROM VINYL HALIDES, VINYL ETHERS AND CARBOXYLIC ESTERS/, Tetrahedron, 54(38), 1998, pp. 11387-11398
Citations number
36
Categorie Soggetti
Chemistry Inorganic & Nuclear
Journal title
Tetrahedron → ACNP
ISSN journal
00404020
Volume
54
Issue
38
Year of publication
1998
Pages
11387 - 11398
Database
ISI
SICI code
0040-4020(1998)54:38<11387:AC(4S->2.0.ZU;2-V
Abstract
The reagent prepared in advance by stirring a mixture of a Cp2TiCl2-Me 3Al(a 1 : 4 ratio) reagent system in toluene for 3 days is found to be effective in generating allylic titanocene on treatment with vinyl ha lides, vinyl ethers and carboxylic esters in THF. The process for the generation of an allylic titanocene species from these starting materi als was suggested to proceed through a formation of titanacyclobutane and the subsequent elimination of the halogen or alkoxyl group. The ge nerated allylic titanocene intermediate was proved to be an allylic TI (IV) species and showed the typical reactivity to carbonyl compounds. (C) 1998 Elsevier Science Ltd. All rights reserved.