New hetarylethenes, viz., 3-[(E)-alk-1-enyl]-4-(1-alkyl-5-methoxy-2-methyl-1H-indol-3-yl)furan-2,5-diones, exhibiting photochromic properties in solution were synthesized. The molecular and crystal structure of 3-(5-methoxy-1,2-dimethyl-1H-indol-3-yl)-4-[(E)-prop-1-enyl]furan-2,5-dione was determined by X-ray diffraction. The initial and photoinduced forms of hetarylethenes are characterized by thermal stability. The open-ring isomers of furandiones exhibit fluorescence with quantum yields of up to 0.1.
合成了新的异
吡咯乙烯,具体为 3-[(E)-烯-1-烯基]-4-(1-烷基-5-甲氧基-2-甲基-1H-
吲哚-3-基)
呋喃-2,5-二酮,这些化合物在溶液中表现出光致变色特性。3-(5-甲氧基-1,2-二甲基-1H-
吲哚-3-基)-4-[(E)-丙-1-烯基]
呋喃-2,5-二酮的分子和晶体结构通过X射线衍射确定。异
吡咯乙烯的初始和光诱导形式具有热稳定性。开环异构体的
呋喃二酮发出荧光,量子产率高达0.1。