金属ポルフィリン錯体を用いる反応制御

概要

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The present paper describes novel strategy for control of synthetic reactions by metalloporphyrins. Aluminum porphyrins have been found to be very effective initiators for living polymerizations of a wide variety of monomers to give polymers of uniform, controlled molecular weight. A novel concept, “immortal polymerization” has been established, which is of much use for elaborate molecular design of polymer materials. Photochemical fixations of carbon dioxide as a C<SUP>I</SUP> source for organic syntheses have been also achieved by using aluminum porphyrins. A highly stereoselective reaction has been observed in the reduction of ketones with alcohols catalyzed by a chloroaluminum porphyrin with Lewis acid character. Zinc <I>N</I>-substituted porphyrins as initiators have provided the first example of photo-induced living polymerization of epoxides. Novel chiral porphyrins and metalloporphyrins with molecular asymmetry have been synthesized and resolved.
社団法人日本油化学会の論文