Thiocyanation and 2-Amino-1,3-thiazole Formation in Water Using Recoverable and Reusable Glycosylated Resorcin[4]arene Cavitands
作者:Ali A. Husain、Kirpal S. Bisht
DOI:10.1021/acs.joc.0c01150
日期:2020.8.7
resorcin[4]arene cavitand glycoconjugates (RCGs) have been applied as efficient recoverable and reusable inverse phase transfer catalysts for eco- and environmentally friendly thiocyanation and 2-amino-1,3-thiazole formation reactions in water. The results show that RCGs (1 mol %) were capable of hosting and catalyzing various water-insoluble bromo/thiocyanato substrates in water without the use of any co-organic
三种空间定向间苯二酚[4]芳烃cavitand糖共轭物(RCGs)系列已被用作高效可回收和可重复使用的反相转移催化剂,用于生态和环境友好的硫氰化和2-氨基-1,3-噻唑在水中的形成反应。结果表明,在不使用任何共有机溶剂的情况下,RCG(1摩尔%)能够在水中容纳和催化各种水不溶性溴/硫氰酸根基质。在使用DCM或乙酸乙酯对所需产物进行简单萃取后,再对回收的含有HCG催化剂的水溶液进行处理,还检查了RCG催化体系RCG1和RCG3的可回收性和可重复使用性。RCG催化剂进入下一个反应周期。