Formation of Indene Derivatives from Bis(cyclopentadienyl)titanacyclopentadienes with Alkyl Group Migration via Carbon−Carbon Bond Cleavage
作者:Tamotsu Takahashi、Yuichi Kuzuba、Fanzhi Kong、Kiyohiko Nakajima、Zhenfeng Xi
DOI:10.1021/ja0561789
日期:2005.12.1
type of migration of an alkyl group in the formation of indene derivatives from titanacyclopentadienes was found. When titanacyclopentadienes with four alkyl groups were heated at 50 degrees C in THF for 24 h under nitrogen, titanium dihydroindene complexes were formed. Oxidation of the dihydroindene complexes with oxygen or alkyl halides afforded indene derivatives with unusual migration of one alkyl
The once cleaved carbon-carbon bond of the Cp moiety in 2 was recombined in indene products. Aslo, we propose a novel mechanism for the cleavage of the carbon-carbon bond of the Cp moiety.