The preparation of a substituted titanocene-supported polymer and its application in catalytic reactions

✍ Scribed by Yanlong Qian; Kunlun Hong; Huijuan Zong; Jiling Huang

• Publisher: John Wiley and Sons
• Year: 1996
• Tongue: English
• Weight: 464 KB
• Volume: 7
• Category: Article
• ISSN: 1042-7147
• DOI: 10.1002/(sici)1099-1581(199608)7:8<619::aid-pat558>3.0.co;2-p

✦ Synopsis

A

series of polymer-supported RCpCpTiC12

(Cp = $ -C,H,; RCp = 7 7 ' -RC,H,) has been prepared and reduced by i-C,H,MgBr in situ, then used as catalysts in hydrogenation of styrene, isomerization of 1 ,S-cyclooctadiene and l,S-hexadiene, and reduction of carbonyl compounds. In some cases, the introduction of a polymer ligand on the Cp ring restricts the aggregation of active sites and the formation of the inactive dimer of the titanocene species, and results in an increase of activity. Regeneration of polymer-supported titanocene catalysts was performed and the results are presented and briefly discussed.