Nitroarenes as versatile building blocks for the synthesis of unsymmetrical urea derivatives and N-Arylmethyl-2-substituted benzimidazoles
作者:Paula A. Rodríguez-Huerto、Diana Peña-Solórzano、Cristian Ochoa-Puentes
DOI:10.1007/s11696-021-01785-7
日期:2021.12
contribution, a fast and simple method for the synthesis of unsymmetrical urea derivatives and N-arylmethyl-2-substituted benzimidazoles was developed starting from nitroarenes. The reaction of nitroarenes and phenyl isocyanate or phenyl isothiocyanate in tin (II) chloride dihydrate/choline chloride eutectic mixture afforded the expected urea and thiourea derivatives, while the reaction of different aldehydes
在这项贡献中,从硝基芳烃开始,开发了一种用于合成不对称脲衍生物和 N-芳甲基-2-取代苯并咪唑的快速简单的方法。硝基芳烃与异氰酸苯酯或异硫氰酸苯酯在二水合氯化锡 (II)/氯化胆碱低共熔混合物中的反应提供了预期的脲和硫脲衍生物,而不同醛与邻硝基苯胺或 4-甲氧基-2-硝基苯胺的反应显示出与 2-取代的类似物相比,获得 N-芳基甲基-2-取代的苯并咪唑具有显着的高偏好。该方法提供了一种直接的替代方法,可以通过操作简单的实验装置以短的反应时间以良好至优异的收率获得目标化合物。一系列不对称的脲和硫脲衍生物以及1,