Synthesis of Benzo[<i>b</i>]imidazo[1,5-<i>d</i>][1,5]-thiazepines. Derivatives of a Novel Ring System
作者:K. Petrova、O. Petrov、A. Antonova、V. Kalcheva
DOI:10.1081/scc-120026866
日期:2003.12.31
Abstract Derivatives of a novel tricyclic system having a 1,5-benzothiazepine skeleton are described. A method for synthesis of the title compounds 5, consisted of an intramolecular cyclization of 1-(2-carboxymethylthiophenyl)-2H-imidazol-2-ones 4 in PPA, is presented. Compounds 4 were prepared by a reaction of 1-(2-mercaptophenyl)-2H-imidazol-2-ones 3 with chloroacetic acid. 2H-Imidazolones 3 were
摘要 描述了具有 1,5-苯并噻嗪骨架的新型三环系统的衍生物。提出了一种合成标题化合物 5 的方法,该方法由 1-(2-羧甲基噻吩)-2H-咪唑-2-酮 4 在 PPA 中的分子内环化组成。化合物4通过1-(2-巯基苯基)-2H-咪唑-2-酮3与氯乙酸反应制备。2H-咪唑酮3通过取代的2(3H)-苯并噻唑酮2在与伯胺反应中的环转化而获得。该方法简便,收率高,使用方便。