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The preparation of a substituted titanocene‐supported polymer and its application in catalytic reactions
Author(s) -
Qian Yanlong,
Hong Kunlun,
Zong Huijuan,
Huang Jiling
Publication year - 1996
Publication title -
polymers for advanced technologies
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.61
H-Index - 90
eISSN - 1099-1581
pISSN - 1042-7147
DOI - 10.1002/(sici)1099-1581(199608)7:8<619::aid-pat558>3.0.co;2-p
Subject(s) - catalysis , styrene , polymer , isomerization , materials science , ligand (biochemistry) , dimer , polymer chemistry , organic chemistry , copolymer , chemistry , biochemistry , receptor , composite material
A series of polymer‐supported RCpCpTiCl 2 (Cp = η 5 C 5 H 5 ; RCp=η 5 RC 5 H 4 ) has been prepared and reduced by i‐C 3 H 7 MgBr in situ, then used as catalysts in hydrogenation of styrene, isomerization of 1,5‐cyclooctadiene and 1,5‐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.