The Gould-Jacobs reaction of all position isomeric 2-aminonitrobenzothiazoles II with diethyl ethoxy- methylenemalonate has been studied. The structure of substitution (IV) and cyclization (VI) products and of the corresponding acids (VIII) was confirmed by elemental analysis, IR, UV, 1H and 13C NMR spectra. Analogous derivatives III, V and VII, derived from the unsubstituted 2-aminobenzothiazole I, were used as standards in interpretation of the spectra. The synthesized derivatives I - VIII were tested for antimicrobial activity.
所有位置异构体2-氨基硝基苯并噻唑II与乙酸二乙酯乙氧基亚甲基丙二酸酯的Gould-Jacobs反应已被研究。通过元素分析、红外、紫外、^1H和^13C核磁共振谱,确认了取代物(IV)和环化物(VI)产物以及相应酸(VIII)的结构。从未取代的2-氨基苯并噻唑I衍生的类似衍生物III、V和VII被用作解释光谱的标准。合成的衍生物I-VIII被用于抗微生物活性测试。