Abstract
Abstract Polymer-supported dimethylformamides were prepared by copolymerization of N-methyl-N-(p-vinylbenzyl)formamide, styrene, and divinylbenzene with AIBN. These polymers displayed catalytic activity for the reaction of alkyl bromides with alkali metal thiocyanates and potassium acetate in a solid-solid-liquid triphase system, although the corresponding monomeric formamides were inactive. The catalytic activity depended remarkably on the copolymer composition. Further, the catalytic reaction was affected by some experimental parameters such as stirring speed, particle size, degree of crosslinking, and solvent. A plausible catalytic reaction mechanism consisting of collisional contact between the solid catalysts and reagents was proposed.
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