SILICA GEL SUPPORTED POLYETHYLENE GLYCOLS FOR PHASE TRANSFER CATALYSIS

Chinese Journal of Applied Chemistry ›› 1989, Vol. 0 ›› Issue (3): 78-80.

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SILICA GEL SUPPORTED POLYETHYLENE GLYCOLS FOR PHASE TRANSFER CATALYSIS

Kang Ruhong, Fan Fengge, He Yanzhang, Zhang Lanping

Department of Chemistry, Hebei Teacher's University, Shijiazhuang

Received:1988-07-13 Revised:1988-10-28 Published:1989-06-10 Online:1989-06-10

Abstract

Abstract: Polyethylene glycols with different mean molecular weight (200-1000) were immobilizedonto silica gels. They all exhibited a certain catalytic activity in esterification and somenucleophilic substitution reactions. The influence of the chain length of polyethylene glycol,the dosage of catalyst used and the polarity of the solvents on the catalytic activity werestudied. The catalysts could be used repeatedely seven times with little loss of its activity.

Key words: Silica gel, Polyethylene glycol, Catalytic activity, Esterification, Nucleophilic substitution

Kang Ruhong, Fan Fengge, He Yanzhang, Zhang Lanping. SILICA GEL SUPPORTED POLYETHYLENE GLYCOLS FOR PHASE TRANSFER CATALYSIS[J]. Chinese Journal of Applied Chemistry, 1989, 0(3): 78-80.

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SILICA GEL SUPPORTED POLYETHYLENE GLYCOLS FOR PHASE TRANSFER CATALYSIS

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