Catalytically active, recyclable zirconocene supported at cross-links within porous polymer disks.
[reaction: see text] Copolymerization of bis(4-vinylbenzylcyclopentadienyl)zirconium dichloride and styrene in a test tube, followed by extraction of the bulk polymer and slicing into "disks" 1 mm thick and 5 mm in diameter, gives a supported zirconocene species that exhibits both stoichiometric and catalytic chemical activity. The disks catalyze reaction of trimethylaluminum and phenylacetylene to give alpha-methylstyrene with modest turnover numbers and are active over at least six recyclings.
Hok
Saphon
S
Department of Chemistry, University of California, One Shields Avenue, Davis, California 95616, USA.
Vassilian
Jenny
J
Schore
Neil E
NE