CATALYSIS OF POLYSTYRENE N-HYDROXYL SULFONAMIDE FOR ESTERIFICATION OF BUTANOL WITH ACETIC ANHYDRIDE |
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Authors: | LI Shufeng LI Qian Yang Xinlin HUANG Wenqiang |
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Affiliation: | State Key Laboratory of Functional Polymer Materials for Adsorption and Separation Institute of Polymer Chemistry, Nankai University, Tianjin 300071, China |
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Abstract: | Polystyrene N-hydroxyl sulfonamide resin 1 was prepared and used to catalyze the esterification of n-butanol and acetic anhydride. The mechanism of catalytic esterification proved by IR spectra of the resins was found that O-H and N-H of the N-hydroxyl sulfonamide resin reacted with the acetic anhydride respectively to form the active intermediate polystyrene N,O-diacetyl sulfonamate which was cleaved by n-butanol to produce butyl acetate. The catalytic esterification by resin 1 was in good agreement with the kinetic model of "bi-bi-ping-pong" mechanism. |
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Keywords: | Polystyrene N-hydroxyl sulfonamide N,O-diacetyl sulfonamate Esterification kinetics Acyl transfer |
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