2-aminopyridine/pyrazine/pyrimidine with substituted isothiocyanates followed by base catalyzed ring closure with 1,2-dibromoethane to obtain thiazolidine-2-imines with broad substrate scope and high functional group tolerance. The synthetic strategy merges well with the thiourea formation followed by base catalyzed ring closure reaction for the thiazolidine-2-imine synthesis in a more modular and straightforward
在这项工作中,描述了一种用于 thiazolidine-2-
亚胺组合库的单锅伸缩方法。通过2-
氨基吡啶/
吡嗪/
嘧啶与取代的异
硫氰酸酯反应,然后用
1,2-二溴乙烷进行碱催化闭环,合成操作顺利进行,得到具有广泛底物范围和高官能团耐受性的
噻唑烷-2-
亚胺。合成策略与
硫脲形成很好地结合,然后以更模块化和更直接的方法合成
噻唑烷-2-
亚胺的碱催化闭环反应。与传统方法相比,本文报道的合成程序代表了一种更清洁的 thiazolidine-2-
亚胺路线。而且,