Domino Reaction Involving (Diacetoxyiodo)Benzene- Promoted Oxidative Rearrangement: A Novel Multicomponent and Efficient Strategy for the Synthesis of Thiadiazole<i>N-</i>Nucleosides
作者:Ibadur R. Siddiqui、Naz Akhtar Siddiqui、Shayna Shamim、Shireen、Anjali Srivastava
DOI:10.1080/15257770.2013.809456
日期:2013.8.3
An efficient one-pot three-component synthesis of thiadiazole N-nucleosides with high atom economy from β-D-ribosylhydrazine, aryl thiamide, and aromatic aldehyde promoted by (diacetoxyiodo)benzene under microwave irradiation is reported. The strategy involves formation of thiourea derivatives by microwave-assisted addition of an arylisothiocyanate formed in situ by (diacetoxyiodo)benzene-promoted
报道了在微波辐射下由(二乙酰氧基碘)苯促进的β-D-核糖基肼,芳基硫酰胺和芳香醛有效地一锅三组分合成高原子经济性的噻二唑N-核苷。该策略涉及通过微波辅助添加由(二乙酰氧基碘)苯促进的芳基硫酰胺与β-D-核糖基肼的席夫碱的氧化重排和取代/未取代的芳族醛形成的芳基异硫氰酸酯,从而形成硫脲衍生物。硫脲中间体在分子内杂环化后产生噻二唑N-核苷,2-(芳基氨基)-3-(β-D-核糖基)-5-芳基-1,3,4-噻二唑。整个反应序列在环境温度下将反应物定量转化为噻二唑N-核苷。