Polymer-Supported Lewis Acid Catalysts. I. Polystyrene-Gallium Trichloride Complex |
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| Authors: | Ran Ruicheng Jiang Shuojian Shen Ji |
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| Institution: | 1. Department of Chemistry , Peking University , Beijing , China;2. Department of Chemistry , Beijing College of Chemical Fiber Technology , Beijing , China |
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| Abstract: | Polystyrene-divinylbenzene (5-7%) copolymer beads are combined with anhydrous gallium trichloride in CS2 to form a stable complex containing 3.06% Cl (equivalent to 0.287 mmol GaCl3/g complex beads). The complex showed good catalytic activity in organic synthetic reactions such as acetalation, esterification, ketal formation, etherification, and Friedel-Crafts alkylation. The catalyst can be reused several times without losing its activity and can be easily separated from the reaction mixtures. |
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| Keywords: | Butadiene‐styrene block copolymer Polybutadiene Macroredox polymerization Copolymerization Ammonium metavanadate |
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