10-Hydroxy-7-arylindeno [1, 2-b]-1, 2, 5-oxadiazolo [3, 4-d] pyridines and 7-aryl-10-oxoindeno [1, 2-b]-1, 2, 5-oxadiazolo [3, 4-d] pyridines-synthesis, spectra, and …

…, H Gorohmaru, T Thiemann, T Sawada…

文献索引：Mataka, Shuntaro; Gorohmaru, Hideki; Thiemann, Thies; Sawada, Tsuyoshi; Takahashi, Kazufumi; Tori-i, Akiyoshi Heterocycles, 1999 , vol. 50, # 2 p. 895 - 902

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被引用次数: 4

摘要

The novel dyes 7-aryl-10-oxoindeno [1, 2-b]-1, 2, 5-oxadiazolo [3, 4-d]-pyridines (4) and 7- aryl-10-hydroxyindeno [1, 2-b]-1, 2, 5-oxadiazolo [3, 4-d]-pyridines (5) have been prepared from acetophenone derivatives. While compounds (4) exhibit a dark red color, they are only weakly fluorescent. Compounds (5) is fluorescent. Of interest is that 10-hydroxy-7- phenylindeno-[1, 2-b]-1, 2, 5-oxadiazolo [3, 4-d] pyridine (5a) can take four polymorphic ...