glucose solution as reaction medium and catalyst underone-pot oxidant-free conditions. The desired products were obtained at 60 °C with good to excellent yields, and the reaction was performed chemoselectively without formation of 1,2-disubstitutedbenzimidazoles. No need for any extra oxidant, simple workup, and use of carbohydrates as fully green promoters are some advantages of the present work
摘要 以1 M葡萄糖溶液为反应介质和催化剂,在一锅无氧化剂条件下,进行了各种邻苯二胺与取代苯甲醛的反应。所需产物在 60 °C 下以良好到极好的收率获得,并且该反应通过化学选择性进行,没有形成 1,2-二取代苯并咪唑。不需要任何额外的氧化剂、简单的后处理以及使用碳水化合物作为完全绿色的促进剂是目前工作的一些优点。
A facile and efficient synthesis of benzimidazole as potential anticancer agents
simple process to synthesize and separate of 2-(substituted-phenyl) benzimidazolederivatives with high yield and efficiency. Specifically, by reacting ortho-phenylenediamines with benzaldehydes using sodium metabisulphite as an oxidation agent in a mixture of solvent under mild condition, twenty-three compounds of benzimidazoles were obtained and separated easily using hexane and water to wash, respectively
摘要这项研究报告了一个简单的过程以高收率和高效率地合成和分离2-(取代的苯基)苯并咪唑衍生物。具体地说,通过在焦油条件下在溶剂混合物中用亚硫酸氢钠作为氧化剂使邻苯二胺与苯甲醛反应,制得二十三种苯并咪唑化合物,并分别用己烷和水洗涤容易地分离。通过FTIR,NMR和HRMS鉴定所有获得的化合物的结构。合成苯并咪唑在人肺(A549),乳腺癌(MDA-MB-231)和前列腺癌(PC3)癌细胞系上的SAR分析表明,苯并咪唑支架上5(6)位的甲基存在是一个重要因素影响抗癌活性。给电子基团(OH,OMe,–NMe的存在2,–O–CH 2 –C 6 H 5)也引起抗癌活性的显着提高,而苯并咪唑环2位苯基上的吸电子基团(–NO 2,–CF 3)的存在减少抑制合成苯并咪唑的能力。化合物2f和2g对A549和PC3细胞系均显示出显着的抗癌活性。 图形摘要通过简单的方法合成了两个系列的2-苯基苯并咪唑,并阐明了其