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

作　　者：LU Xue-ran ZHANG Li-feng WANG Zhen-xia LIU Xiu-fang and CHEN Yuan-yin(Department of Chemistry , Wuhan University, Wuhan, 430072 ) 

出　　处：《Chemical Research in Chinese Universities》1994年第2期126-130,共5页高等学校化学研究（英文版）

摘　　要：he 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.he 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.

关 键 词：Crown ether Selenacrown ether PLATINUM Hydrosilylation catalyst Polysiloxane 

分 类 号：O643.41[理学—物理化学]