Preparation and reactions of monocyclic bis(cyclopentadienyl)titanacyclopentenes and -pentadienes

Authors
Sato, K Nishihara, Y Huo, SQ Xi, ZF Takahashi, T
Citation
K. Sato et al., Preparation and reactions of monocyclic bis(cyclopentadienyl)titanacyclopentenes and -pentadienes, J ORGMET CH, 633(1-2), 2001, pp. 18-26
Citations number
55
Categorie Soggetti
Organic Chemistry/Polymer Science
Journal title
JOURNAL OF ORGANOMETALLIC CHEMISTRY
ISSN journal
0022328X → ACNP
Volume
633
Issue
1-2
Year of publication
2001
Pages
18 - 26
Database
ISI
SICI code
0022-328X(20010907)633:1-2<18:PAROMB>2.0.ZU;2-7
Abstract
A combination of CP2TiCl2-2EtMgBr was found to be very effective for the fo rmation of monocyclic titanacyclopentenes in excellent yields. On the other hand, a combination of Cp2TiCl2-2n-BuLi was used for intermolecular coupli ng of two alkynes to form titanacyclopentadienes in good to excellent yield s. A reaction temperature range from -10 to -30 degreesC was critical for t he success of the combinations. Reactions of these in situ-prepared titanac ycles show interesting similarities to or differences from their zirconacyc le analogs. (C) 2001 Published by Elsevier Science BN.