Silica-supported Polysiloxane with Selenacrown Ether Moieties and Its Platinum Complex

Abstract

Abstract: The present paper covers syntheses of the first functionalized selenacrownether, allyloxymethyl-1-selena-4, 7, 10, 13, 16-pentaoxacyclooctadecane, and its im-mobilized product, silica-supported polypropyloxymethyl-1-selena-18-C-6 siloxane.It was found that the immobilized selenacrown ether could coordinate with platinumsalt and the platinum complex was a new type of polymeric hydrosilylation catalyst.The polymer catalyst exhibited a high catalytic activity for the hydrosilylation ofolefins with triethoxysilane in the temperature range of 60 to 110℃.The turnovernumber could amount to more than 100,000 in one run.

Key words: Crown ether, Selenacrown ether, Platinum, Hydrosilylation catalyst, Polysiloxane

LU Xue-ran, ZHANG Li-feng, WANG Zhen-xia, LIU Xiu-fang, CHEN Yuan-yin. Silica-supported Polysiloxane with Selenacrown Ether Moieties and Its Platinum Complex[J]. Chemical Research in Chinese Universities, 1994, 10(2): 126-130.

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Silica-supported Polysiloxane with Selenacrown Ether Moieties and Its Platinum Complex

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