Synthesis and structure of indoline spiropyrans of the coumarin series
作者:V. F. Traven、V. S. Miroshnikov、T. A. Chibisova、V. A. Barachevsky、O. V. Venidiktova、Yu. P. Strokach
DOI:10.1007/s11172-006-0131-4
日期:2005.10
New indoline spiropyrans of the coumarin series were synthesized by the condensation of indoline and hydroxyformylcoumarin derivatives. Spiropyrans, viz., derivatives of 8-formyl-7-hydroxy-4-methylcoumarin and 5-formyl-6-hydroxy-4-methylcoumarin, under irradiation are transformed into open forms, which are recyclized in the dark. The compounds formed by the condensation of the indoline derivatives with 3-formyl-4-hydroxycoumarin have an open structure of the merocyanine dyes and are transformed into spiro forms neither in the dark nor under irradiation with the visible light.