Competitive photocyclization/rearrangement of 4-aryl-1,1-dicyanobutenes controlled by intramolecular charge-transfer interaction. Effect of medium polarity, temperature, pressure, excitation wavelength, and confinement
作者:Tadashi Ito、Emi Nishiuchi、Gaku Fukuhara、Yoshihisa Inoue、Tadashi Mori
DOI:10.1039/c1pp05038a
日期:2011.9
charge-transfer (C–T) interactions in the ground state. Photoexcitation of these C–T substrates led to competitive cyclization and rearrangement, the ratio being critically controlled by various environmental factors, such as solvent polarity, temperature and static pressure, and also by excitation wavelength and supramolecular confinement (polyethylene voids). In non-polar solvents, the rearrangement was