Synthesis of the Derivatives of 4-(5-Aryl-3-methylfuran-3-yl)-1,2,3-thiadiazole and Functionalization of 5-Aryl-2- methylfuran via Reactions of Thiadiazole Ring
作者:Yu. O. Remizov、L. M. Pevzner、M. L. Petrov
DOI:10.1134/s1070363218070095
日期:2018.7
2-methyl-3-acetylfuran via the Gomberg–Bachmann reaction 5-(4-ethoxycarbonylphenyl)-, 5-(2-nitrophenyl), and 5-(4-nitrophenyl)-2-methyl-3-acetylfurans were synthesized. Carboethoxyhydrazones of 2-methyl-5-phenyl-3-acetylfuran and its phenyl-substituted analogs when treated with thionyl chloride form 4-(5-aryl-2-methylfuran-3-yl)-1,2,3-thiadiazoles by the Hurd–Mori reaction. Thermal stability of obtained compounds
通过Gomberg-Bachmann反应将2-甲基-3-乙酰基呋喃芳基化,得到5-(4-乙氧基羰基苯基)-,5-(2-硝基苯基)和5-(4-硝基苯基)-2-甲基-3-乙酰基呋喃合成的。当用亚硫酰氯处理时,2-甲基-5-苯基-3-乙酰基呋喃的碳乙氧基hydr及其苯基取代的类似物通过以下方式形成4-(5-芳基-2-甲基呋喃-3-基)-1,2,3-噻二唑。赫德-莫里反应。所获得的化合物的热稳定性随着苯环中取代基的电子受体作用的增加而增加。叔丁基钾作用下合成的化合物中噻唑环的开环在烷基碘的存在下,在THF中的丁酸生成相应的烷基硫代乙炔基呋喃。在过量吗啉存在下与碳酸钾在DMF中进行反应,可以制备(2-甲基-5-芳基呋喃-3-基)硫代乙酰吗啉。