The Use of 4-(3,4-Dichlorophenyl)-4-Oxo-2-(4-Antipyrinyl)-Butanoic Acid in the Preparation of Some New Heterocyclic Compounds With Expected Biological Activity
作者:G. Sayed、A. Hamed、G. Meligi、W. Boraie、M. Shafik
DOI:10.3390/80300322
日期:——
Reaction of 4-oxo-4-(3,4-dichlorophenyl)-2-butenoic acid (1) with antipyrin (2) gave the corresponding butanoic acid 3. Reaction of 3 with hydrazines gave the pyridazinone derivatives 5a,b. Compounds 5a,b were used to prepare the corresponding dithio derivatives. Reaction of 5a with POCl3 unexpectedly gave the chloropyridazine derivative 7, which is used to prepare the corresponding thio derivative. The hitherto unknown reactions of this chloro derivative with 2-amino-3-carbethoxy-4,5-dimethylthiophene and 2-amino-3-carbethoxy tetrahydrobenzothiophene have now been described. The behaviour of the chloro derivative toward hydrazine hydrate, sodium azide and anthranilic acid was also studied. Some of the new compounds showed antimicrobial and antifungal activities .
4-oxo-4-(3,4-dichlorophenyl)-2-butenoic acid (1) 与 antipyrin (2) 反应生成相应的丁酸 3。3 与肼反应生成哒嗪酮衍生物 5a、b。化合物 5a 和 b 被用来制备相应的二硫代衍生物。5a 与 POCl3 反应,意外地得到了氯哒嗪衍生物 7,并用它制备了相应的硫代衍生物。该氯衍生物与 2-氨基-3-乙氧羰基-4,5-二甲基噻吩和 2-氨基-3-乙氧羰基四氢苯并噻吩迄今未知的反应现已得到描述。此外,还研究了氯衍生物对水合肼、叠氮化钠和蚁酸的作用。其中一些新化合物具有抗菌和抗真菌活性。