分子もつれ法を基盤とした高分子金属触媒ならびに触媒膜導入型マイクロフローデバイスの創製

概要

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Highly active and reusable solid-phase catalysts were developed with our ‘molecular convolution methodology’ where a soluble linear polymer having multiple ligand groups was convoluted with transition metals via coordinative or ionic complexation to achieve the one-step preparation of the insoluble polymeric metal composite. These convoluted polymeric-palladium nanoparticles, -phosphotungstate salt, and -palladium complex promoted the organic transformations with high reusability to give the corresponding products quantitatively.Moreover, instantaneous catalytic cross-coupling reactions were achieved in the catalytic membrane-installed microchannel devices having a polymeric palladium complex membrane. The catalytic membrane-installed microchannel devices were installed inside the microchannels via the molecular convolution at the interface between the organic and aqueous phases flowing laminarly. The microflow device-catalyzed Suzuki-Miyaura reaction was performed at 50°C to give the product quantitatively within 5 sec of residence time. They were applied to the allylic arylation at 70°C to afford the corresponding products quantitatvely within 1 sec of residence time.