Bridged cyclopentadienyl derivatives and process for their preparation

US6139484A · kind A · utility

Assignee

• Enichem S.p.A · IT

Inventors

• Paolo Biagini · Trecate, IT
• Gabriele Lugli · Orta Nova, IT
• Roberto Santi · Novara, IT
• Giampiero Borsotti · Novara, IT
• Viviano Banzi · Vigarano Mainarda, IT

Key dates

• Filing date: Oct 10, 1996
• Grant date: Oct 31, 2000
• Expiry date: Oct 10, 2016

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C07C2602/32
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

Bridged cyclopentadienyl derivatives having general formula (I) EQU A--X--B (I) wherein: PA1 1) A is a monofunctional hydrocarbyl radical having general formula (II) ##STR1## 2) --X-- is the bridge between A and B and consists of a bifunctional radical selected from an alkylene group, a silanylene group, an alkyl substituted silaalkylene group, a siloxasilanylene group; PA1 3) B is a monofunctional hydrocarbyl radical selected from: PA2 e) any of the A radicals defined above, PA2 f) a cyclopentadienyl radical.