Photochromism: nature of the coloured form of 1,2-dihydroquinolines
Abstract
1-Cyano-1,2-dihydro-2-hydroxyquinolines when subjected to low-temperature rigid-matrix photochemistry and then warmed give rise principally to N-cyano-o-aminocinnamaldehyde. This result verifies the fact that the core molecular structure of the photocoloured forms of the 1,2-dihydroquinolines previously suggested is correct.