One-pot rapid synthesis of thiazole-substituted pyrazolyl-4-thiazolidinones mediated by diisopropylethylammonium acetate
作者:Lalit D. Khillare、Manisha R. Bhosle、Amarsinh R. Deshmukh、Ramrao A. Mane
DOI:10.1007/s11164-015-1940-6
日期:2015.11
A convenient one-pot, rapid and scalable synthetic protocol has been developed for recently reported anti-inflammatory agents, thiazole-substituted pyrazolyl-4-thiazolidinones. Quantitative multicomponent cyclocondensation of 3-(4-methyl-2-substituted thiazol-5-yl)-1-phenyl-1H-pyrazole-4-carbaldehydes (5a, b), amines and mercaptoacetic acid has been carried out in safer medium, diisopropylethylammonium acetate, at room temperature. The optimisation details of the developed novel protocol are recorded.
一种方便的一锅法、快速且可扩展的合成方案已被开发,用于最近报道的抗炎药物,即噻唑取代的吡唑-4-噻唑烷酮。对3-(4-甲基-2-取代噻唑-5-基)-1-苯基-1H-吡唑-4-醛(5a, b)、胺和巯基乙酸的定量多组分环缩合反应已在更安全的介质二异丙基乙胺乙酸盐中于室温下进行。所开发的新型方案的优化细节已记录。