Chemodivergent Synthesis of Benzothiadiazin-3-one 1-Oxides and Benzisothiazol-3-ones via Visible Light-Promoted Intramolecular N–S Bond Formation
作者:Huimin Li、Zhiqiang Xiong、Shouri Sheng、Junmin Chen
DOI:10.1021/acs.joc.3c01775
日期:2023.12.15
We reported a versatile protocol to chemodivergently construct significant heterocyclic scaffolds of benzothiadiazin-3-one 1-oxides and benzisothiazol-3-ones by visible light-promoted photocatalysis. This substrate-dependent chemoselective strategy enables N-(2-mercaptophenyl)-N’-substituted ureas through the N–S bond coupling/oxidation cascade to selectively produce benzothiadiazin-3-one 1-oxides;
我们报道了一种通用方案,通过可见光促进的光催化化学发散地构建苯并噻二嗪-3-酮1-氧化物和苯并异噻唑-3-酮的重要杂环支架。这种底物依赖性化学选择性策略使得N- (2-巯基苯基) -N'-取代脲通过N-S键偶联/氧化级联选择性地产生苯并噻二嗪-3-酮1-氧化物;然而,2-巯基苯甲酰胺的转化仅通过 N-S 键偶联发生,以得到苯并异噻唑-3-酮,产率中等至良好。该策略具有条件温和、化学选择性好、官能团相容性好的特点,在有机化学和药物化学中具有潜在的应用前景。