One-pot synthesis of 2-arylbenzimidazole, 2-arylbenzothiazole and 2-arylbenzoxazole derivatives using vanadium(IV)–salen complex as homogeneous catalyst and vanadium(IV)–salen complex nanoparticles immobilized onto silica as a heterogeneous nanocatalyst
作者:Hashem Sharghi、Mahdi Aberi、Mohammad Mahdi Doroodmand
DOI:10.1007/s13738-011-0045-4
日期:2012.4
The efficient synthesis of 2-arylbenzimidazole, 2-arylbenzothiazole and 2-arylbenzoxazole derivatives is described by condensation of aryl aldehydes and o-phenylenediamines, 2-aminothiophenol and 2-aminophenol in a single pot using a catalytic amount of vanadium(IV)–salen complex or vanadium–salen nanoparticles supported on silica (5.0 mol%) in excellent isolated yields. The immobilized catalyst was
通过在一个罐中使用催化量的钒(IV)-salen缩合芳基醛与邻苯二胺,2-氨基苯硫酚和2-氨基苯酚来描述2-芳基苯并咪唑,2-芳基苯并噻唑和2-芳基苯并恶唑衍生物的有效合成负载在二氧化硅(5.0 mol%)上的复杂或钒salen纳米颗粒,具有优异的分离产率。通过粉末X射线衍射,扫描电子显微镜,原子力显微镜,透射电子显微镜,电感耦合等离子体分析,热重分析仪对氮的吸附和FT-IR光谱进行表征。