Studies on Synthesis, Phase Transfer Catalysis and Catalytic Mechanism of Polystyrene-Supported Polyethylene Glycol Benzyl Ether

Abstract

Abstract: Polystyrene-supported polyethylene glycol was synthesized using a imporved method. The phase-transfer catalysis was studied in the reaction of n-C₈H₁₇Br with solid Nal. The reaction rate was a first-order with respect to the concentration of n-C₈H₁₇Br. The observed reaction rate constant kobs increased as the degree of cross-linking and particle size of catalyst decreased. Macroporous catalysts showed a higher activity than that of microporous catalysts. Trace amount of water also showed some influence on k_obs. k_obs of PEGwas increased after it was immobilized. The solid-solid contact mechanism of S-S-Lsystem was confirmed by our experiment.

Key words: Polymer-supported, Polyethylene glycol benzyl ether, Phase-transfer catalysis

TrendMD:

Liang Xun, Qi Hongyan . Studies on Synthesis, Phase Transfer Catalysis and Catalytic Mechanism of Polystyrene-Supported Polyethylene Glycol Benzyl Ether[J]. Chem. J. Chinese Universities, 1989, 10(6): 623.

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Studies on Synthesis, Phase Transfer Catalysis and Catalytic Mechanism of Polystyrene-Supported Polyethylene Glycol Benzyl Ether

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