ABSTRACT Seven, novel pyrrolo[2,3-c]pyrazol-3(2H)-one and 1,2-dihydro-5H,6H-pyridazine-5,6-dione chromophores were synthesized by the reaction of 4-aroyl-5-phenylamino-2,3-dihydrothiophene-2,3-diones with cyanoacetohydrazide and arylhydrazines such as phenylhydrazine and 4-nitrophenylhydrazine. These derivatives were characterized by elemental analysis, IR, UV-Visible, 1H, 13C NMR and mass spectroscopy. Spectral characteristics of the compounds were studied in four organic solvents of differing polarity. GRAPHICAL ABSTRACT

中文翻译：

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4-aroyl-5-phenylamino-2,3-dihydrothiophene-2,3-diones 的环链转化：新型​​ pyrrolo[2,3-c]pyrazol-3(2H)-ones 和 1, 2-dihydro-5H,6H-pyridazine-5,6-diones

七、通过4-芳酰基-5反应合成了新型吡咯并[2,3-c]吡唑-3(2H)-酮和1,2-二氢-5H,6H-哒嗪-5,6-二酮发色团-苯基氨基-2,3-二氢噻吩-2,3-二酮与氰基乙酰肼和芳基肼如苯肼和4-硝基苯肼。这些衍生物的特征在于元素分析、IR、UV-可见光、1H、13C NMR 和质谱。在四种不同极性的有机溶剂中研究了化合物的光谱特性。图形概要