Development of a solar energy storage process. Photoisomerization of a norbornadiene derivative to a quadricyclane derivative in an aqueous alkaline solution
Development of a solar energy storage process. Photoisomerization of a norbornadiene derivative to a quadricyclane derivative in an aqueous alkaline solution
POLAR EFFECT ON METALLOPORPHYRIN-CATALYZED REACTION
作者:Kazuhiro Maruyama、Hitoshi Tamiaki
DOI:10.1246/cl.1986.819
日期:1986.5.5
The isomerization rate of 2-carboxyquadricyclanes catalyzed by cobalt–porphyrin complexes was enhanced by introduction of a pyridyl group to the porphyrin ligand. This phenomenon is recognized to be due to a polar effect; an interaction between acid and base.
By action of insoluble catalysts, cobalt tetraphenylporphyrin or cobalt phthalocyanine adsorbed on activated carbon, water-soluble quadricyclane derivative was isomerized to norbornadiene derivative under release of heat in an alkaline solution. The activities of these insoluble catalysts were as high as those of water-soluble catalysts.