Citation: GUAN Shiyou, HUANG Meiyu, JIANG Yingyan. OXIDATIVE ETHOXYCARBONYLATION OF ANILINE TO ETHYL PHENYLCARBAMATE CATALYZED BY SILICA- SUPPORTED POLY-γ-AMINOPROPYLSILOXANEMETAL COMPLEXES[J]. Chinese Journal of Polymer Science, ;1993, 11(2): 97-102. shu

OXIDATIVE ETHOXYCARBONYLATION OF ANILINE TO ETHYL PHENYLCARBAMATE CATALYZED BY SILICA- SUPPORTED POLY-γ-AMINOPROPYLSILOXANEMETAL COMPLEXES

Received Date: 10 November 1991

Several silica-supported poly-γ-aminopropylsiloxane-monometal and bimetal complexes (Si-NH2-M,M = Cu or Co ; Si-NH2-Cu-M', M' =Co, Sn, Mn, Ni or Fe) have been prepared. Their catalytic properties for oxidative ethoxycarbonylation of aniline to ethyl phenylcarbamate have been investigated.The catalytic reaction was carried out under relatively mild conditions. The catalyst Si-NH2-Cu-CO had high activity and selectivity, and the turn-over number (molar of aniline converted/molar of metal in Si-NH2-Cu-CO added) could amount to 450 under the conditions:150℃,4 MPa (CO/O2=3) and 40 hours.The results of XPS and IR indicated that the coordination bonds were formed between nitrogen and metals in Si—NH2—Cu,Si—NH2—Co and Si—NH2—Cu—Co,and the coordination pattern was not single.In the oxidative ethoxycarbonylation of aniline to ethyl phenylcarbamate,the catalytic property of Si—NH2—Cu—Co bimetallic complex was better than Si—NH2—Cu or Si—NH2—Co monometallic complex.This indicated that there was synergistic action between different metals in the bimetallic complex.
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