Metal- and solvent-free synthesis of aniline- and phenol-based triarylmethanes<i>via</i>Brönsted acidic ionic liquid catalyzed Friedel-Crafts reaction
作者:Nipaphorn Ponpao、Warapong Senapak、Rungnapha Saeeng、Jaray Jaratjaroonphong、Uthaiwan Sirion
DOI:10.1039/d1ra03724b
日期:——
A beneficial, scalable and efficient methodology for the synthesis of aniline-based triarylmethanes has been established through the double Friedel-Crafts reaction of commercial aldehydes and primary, secondary or tertiary anilines using Brönsted acidic ionic liquid as a powerful catalyst, namely [bsmim][NTf2]. This protocol was successfully performed under metal- and solvent-free conditions with a
通过商业醛与伯、仲或叔苯胺的双重弗里德尔-克来福特反应,使用布朗斯台德酸性离子液体作为强大的催化剂,即[bsmim][,建立了一种有益的、可扩展的和高效的合成苯胺基三芳基甲烷的方法。 NTf 2 ]。该方案在无金属和无溶剂的条件下使用多种底物成功进行,得到了相应的基于苯胺的三芳基甲烷产品,产率良好至优异(高达 99%)。此外,还使用这种有用的方法研究了苯酚和富电子芳烃等替代芳香族亲核试剂,以高至优异的产率获得了多种三芳基甲烷衍生物。