作者:Xavier Bantreil、Pauline Navals、Jean Martinez、Frédéric Lamaty
DOI:10.1002/ejoc.201403173
日期:2015.1
activation for this reaction. The benzamides were directly formed from alcohols and amine hydrochloride salts in short reaction times with yields up to 84 % and TOFs (turnover frequencies) up to 33.6 h–1. Among the examined transition metals, only nontoxic and inexpensive FeCl2·4H2O together with caffeine as a stabilizing ligand provided a uniquely efficient catalytic system for the transformation. Natural
酰胺键是许多药物和聚合物中的基本单元。醇和胺的催化氧化是用有限的不需要的废物形成酰胺的有效方法。在此,我们展示了微波活化对该反应的有益效果。苯甲酰胺在很短的反应时间内由醇和胺盐酸盐直接形成,产率高达 84%,TOF(周转频率)高达 33.6 h–1。在所研究的过渡金属中,只有无毒且廉价的 FeCl2·4H2O 与作为稳定配体的咖啡因一起为转化提供了独特的高效催化体系。在酰胺化条件下也评估了咖啡因的天然来源。