A novel gold(I)-mediated intramolecular transamidation of benzoyl thiourea derivatives to form benzamides via dethiocyanation
作者:Felix Odame、Guillaume Woodcock、Eric C. Hosten、Kevin Lobb、Zenixole R. Tshentu
DOI:10.1016/j.jorganchem.2020.121359
日期:2020.9
intramolecular transamidation of thiourea derivatives to yield benzamides via dethiocyanation have been achieved by the reaction of 3-(1,3-benzothiazol-2-yl)-1-(benzoyl)thiourea derivatives in the presence of gold(I) precursors. The compounds have been characterized using IR, NMR, GC-MS and microanalysis. The single crystal XRD of 3-(1,3-benzothiazol-2-yl)-1-(3-bromobenzoyl)thiourea (5), 3-(1,3-benzothiazo
通过3-(1,3-苯并噻唑-2-基)-1-(苯甲酰基)硫脲衍生物的反应,实现了一种新的金(I)介导的硫脲衍生物分子内酰胺基转移,通过脱硫氰化反应生成苯甲酰胺。金(I)前体。使用IR,NMR,GC-MS和微量分析对化合物进行了表征。3-(1,3-苯并噻唑-2-基)-1-(3-溴苯甲酰基)硫脲(5),3-(1,3-苯并噻唑-2-基)-1-(3-甲氧基苯甲酰基)硫脲(6),N-(苯并噻唑-2-基)苯甲酰胺(10),N-(苯并噻唑-2-基)-3-氯苯甲酰胺(11),N-(苯并噻唑-2-基)-4-硝基苯甲酰胺(12),已经讨论了N-(苯并噻唑-2-基)-3-溴苯甲酰胺(14)。新的转化被认为是通过金(I)介导的分子内氨基转移反应进行的,该反应释放出硫氰酸盐以产生苯甲酰胺。密度泛函理论计算已用于支持此转换的建议机制。