Photochromic heterocyclic fulgides. Part 2. Electrocyclic reactions of (E)-α-2,5-dimethyl-3-furylethylidene(alkyl-substituted methylene)succinic anhydrides
作者:Paul J. Darcy、Harry G. Heller、Peter J. Strydom、John Whittall
DOI:10.1039/p19810000202
日期:——
undergo reversible photochemical conrotatory electrocyclic reactions to give in quantitative yields deep red 7,7a-dihydrobenzo[b]furan-5,6-dicarboxylic anhydrides, which are stable at 100 °C. These photochromic systems, which have high quantum yields for photocolouration, are highly resistant to photodegradation and retain their photochromic properties in a variety of solvents.
浅黄色标题化合物经过可逆的光化学旋转电环反应,定量获得深红色的7,7a-二氢苯并[ b ]呋喃-5,6-二羧酸酐,其在100°C下稳定。这些用于光致变色的量子产率高的光致变色体系具有高度的耐光降解性,并在各种溶剂中保持其光致变色特性。