Copper triflate-mediated synthesis of 1,3,5-triarylpyrazoles in [bmim][PF6] ionic liquid and evaluation of their anticancer activities
作者:V. Kameshwara Rao、Rakesh Tiwari、Bhupender S. Chhikara、Amir Nasrolahi Shirazi、Keykavous Parang、Anil Kumar
DOI:10.1039/c3ra41830h
日期:——
A simple, efficient, and environment friendly protocol for the synthesis of 1,3,5-triarylpyrazole and 1,3,5-triarylpyrazolines in [bimm][PF6] ionic liquid mediated by Cu(OTf)2 is described. The reaction protocol gave 1,3,5-triarylpyrazoles in good to high yields (71-84%) via a one-pot addition-cyclocondensation between chalcones and arylhydrazines, and oxidative aromatization without requirement for
描述了一种简单,有效且环保的方案,用于在由Cu(OTf)2介导的[bimm] [PF6]离子液体中合成1,3,5-三芳基吡唑和1,3,5-三芳基吡唑啉。该反应方案通过查耳酮与芳基肼之间的一锅加成-环缩合和氧化芳构化而获得了高至高产率(71-84%)的1,3,5-三芳基吡唑,而无需额外的氧化剂。催化剂可以重复使用多达四个循环,而催化活性没有太大损失。评估吡唑(4a-o)和吡唑啉(3a-n)在SK-OV-3,HT-29和HeLa人癌细胞系中的抗增殖活性。在所有化合物中,浓度为50μM的3b抑制HeLa细胞的细胞增殖80%。