Mild Oxidative Deprotection of Aromatic Hydrazones and Semicarbazones with KMnO<sub>4</sub>in Ionic Liquid Medium
作者:Javad Safaei-Ghomi、Abdol R. Hajipour
DOI:10.1080/00304948.2011.582013
日期:2011.1
conventional procedures are that they provide greater selectivity, enhanced reaction rates, cleaner products and manipulative simplicity.12 Although some of these conventional methods have convenient protocols with good to high yields, most suffer from at least one of disadvantages such as use of high temperature and long reaction times, moisture sensitivity, high cost and toxicity of the reagents. Ionic
试剂成本高,毒性大。离子液体 (IL) 结合了良好且可调节的溶解度特性、可忽略不计的蒸气压和出色的热稳定性,已迅速成为许多挥发性溶剂的有价值替代品。6,11,13,14 由于其独特的特性。 ,很快就发现离子液体不仅仅是简单的近代溶剂。离子液体中的反应表现出与传统溶剂不同的热力学和动力学行为。15,16 这通常会导致改进的工艺性能,例如更好的选择性和/或转化率;此外,离子液体可提高有机金属试剂 9,10,17,18 和生物催化剂 3,11 的稳定性,允许产品回收以及均相催化剂循环利用的可能性。