Bridged metallocene catalysts with a pendant group 13 element, catalyst systems containing same, processes for making a polymer product using same, and products made from same
Bridged metallocene catalysts with a pendant group 13 element, catalyst systems containing same, processes for making a polymer product using same, and products made from same
[EN] METALLOCENE SYNTHESIS PROCESS<br/>[FR] PROCÉDÉ DE SYNTHÈSE DE MÉTALLOCÈNE
申请人:EXXONMOBIL CHEMICAL PATENTS INC
公开号:WO2020009802A1
公开(公告)日:2020-01-09
A process to synthesize a Group 4 awra-metallocene. The process includes reacting an alkaline earth metal dianion dicyclopentadiene ligand-Lewis base complex with a Group 4 metal tetrahalide in the presence of an alkali metal halide, and forming the Group 4 ansa- metallocene dihalide with high yield and purity.
Synthesis and characterization of -[2.2](1,6)azulenophane
作者:Klaus Rudolf、T. Koenig
DOI:10.1016/s0040-4039(00)94964-5
日期:1985.1
Two synthetic pathways affording anti-[2.2](1,6)azulenophane via fluoride induced 1,8 elimination from trimethylsilyl-tetraalkylammonium salts are described. Spectral data are reported that allow the structural assignment for the title compound.