Process for the preparation of cyclopentadienyl compounds and compounds
申请人:Montell Technology Company bv
公开号:US06043403A1
公开(公告)日:2000-03-28
A process is disclosed for preparing bis-cyclopentadienyl compounds bridged by a single carbon atom by reacting a carbonyl compound with a cyclopentadienyl compound in the presence of a base and of an oxygen-containing solvent having an atomic ratio carbon/oxygen not higher than 3. The compounds obtainable in high yields with this simple single-step process can be used to prepare ansa-metallocenes which are active as catalyst components in the polymerization of olefins.
Process for the preparation of cyclopentadienyl compounds and compounds obtained therefrom
申请人:Basell Technology Company B.V.
公开号:EP0722949B1
公开(公告)日:2001-07-04
General Synthetic Route to Substituted Bis(cyclopentadienyl)- and Bis(indenyl)methanes
作者:Ilya E. Nifant'ev、Pavel V. Ivchenko、Lyudmila G. Kus'mina、Yuri N. Luzikov、Alexander A. Sitnikov、Oleg E. Sizan
DOI:10.1055/s-1997-1200
日期:1997.4
Several substituted bis(cyclopentadienyl)- and bis(indenyl)methanes were synthesized directly from the corresponding cyclopentadienes (indenes) and ketones in KOH/DME two-phase mixture.