A novel gold(I)-mediated 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-benzothiazol-2-yl)-1-(3-methoxybenzoyl)thiourea (6), N-(benzothiazol-2-yl)benzamide (10), N-(benzothiazol-2-yl)-3-chlorobenzamide (11), N-(benzothiazol-2-yl)-4-nitrobenzamide (12), N-(benzothiazol-2-yl)-3-bromobenzamide (14) have been discussed. The novel transformation is thought to proceed by a gold(I)-mediated intramolecular transamidation reaction which releases thiocyanate to yield the benzamide. Density functional theory calculations have been used to support the proposed mechanism for this transformation.

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。