Synthesis and photochromic behaviour of novel 2H-chromenes derived from fluorenone
作者:Paulo J Coelho、Luis M Carvalho、Sérgio Rodrigues、A.M.F Oliveira-Campos、Roger Dubest、Jean Aubard、André Samat、Robert Guglielmetti
DOI:10.1016/s0040-4020(01)01187-5
日期:2002.1
The synthesis of 2H-chromenes based on a fluorenone nucleus is described. Whereas 2,2-diphenyl-2H-pyranofluorenones 4–7 and dicyanomethylidene-2H-pyranofluorenes 8–10 do not exhibit photochromism, 2,2-diphenyl-2H-pyranofluorenols exhibit photochromic behaviour. The spectrokinetic properties of these compounds in solution are reported.
描述了基于芴酮核的2 H-色烯的合成。而2,2-二苯基-2- ħ -pyranofluorenones 4 - 7和氰基亚甲基2 ħ -pyranofluorenes 8 - 10不表现出光致变色,2,2-二苯基-2- ħ -pyranofluorenols表现出光致变色性能。报道了这些化合物在溶液中的光谱动力学性质。