无溶剂条件下以10-钼-2-钒磷酸为高效、可重复使用催化剂一锅法合成2,4,5-三取代咪唑衍生物（英文）  

KSF supported 10-molybdo-2-vanadophosphoric acid as an efficient and reusable catalyst for one-pot synthesis of 2,4,5-trisubstituted imidazole derivatives under solvent-free condition

作　　者：Laxmikant D.Chavan Sunil G.Shankarwar 

机构地区：[1]Department of Chemistry,Dr.Babasaheb Ambedkar Marathwada University

出　　处：《催化学报》2015年第7期1054-1059,共6页

摘　　要：The one-pot three-component cyclocondensation has been developed involving the reaction of benzil with an aromatic aldehydes and ammonium acetate under thermal solvent-free conditions in the presence of a KSF supported 10-molybdo-2-vanadophosphoric acid catalyst. 10-Molybdo-2-vanadophosphoric acid was immobilized on KSF with a 20% loading, which showed the highest catalytic activity. The catalyst was fully characterized using FT-IR spectroscopy, thermal analysis, XRD and SEM analysis techniques. There are several distinct advantages to this protocol, including high yields, short reaction time, operational simplicity and a recyclable catalyst with a facile work-up procedure.The one-pot three-component cyclocondensation has been developed involving the reaction of benzil with an aromatic aldehydes and ammonium acetate under thermal solvent-free conditions in the presence of a KSF supported 10-molybdo-2-vanadophosphoric acid catalyst. 10-Molybdo-2-vanadophosphoric acid was immobilized on KSF with a 20% loading, which showed the highest catalytic activity. The catalyst was fully characterized using FT-IR spectroscopy, thermal analysis, XRD and SEM analysis techniques. There are several distinct advantages to this protocol, including high yields, short reaction time, operational simplicity and a recyclable catalyst with a facile work-up procedure.

关 键 词：无溶剂条件 酸催化剂 一锅合成 可重复使用 咪唑衍生物 三取代 FT-IR光谱 反应时间 

分 类 号：O626.23[理学—有机化学]