The Reaction of Benzonitrile Oxides with<i>S</i>,<i>S</i>-Dimethyl-<i>N</i>-(2,4,6-trihalophenyl)sulfimides. The Formation of Benzoxazole Derivatives
作者:Shinsaku Shiraishi、Tohru Hayakawa、Tadashi Shigemoto
DOI:10.1246/bcsj.56.1514
日期:1983.5
The reactions of nitrile oxides with S,S-dimethyl-N-(2,4,6-trihalophenyl)sulfimides gave unusual products, which structure was determined to be 2-aryl-4,6-dihalobenzoxazoles from their elementary analyses and spectral data. While the reactions with S,S-dimethyl-N-(2-bromophenyl)- or S,S-dimethyl-N-(2,4-dibromophenyl)sulfimide gave 1,2,4-benzoxadiazine derivatives. A plausible reaction mechanism for
腈氧化物与 S,S-二甲基-N-(2,4,6-三卤代苯基)硫酰亚胺反应得到不寻常的产物,从元素分析和光谱数据确定其结构为 2-芳基-4,6-二卤代苯并恶唑. 而与 S,S-二甲基-N-(2-溴苯基)-或 S,S-二甲基-N-(2,4-二溴苯基)硫酰亚胺反应得到 1,2,4-苯并恶二嗪衍生物。提出了一种不寻常形成苯并恶唑的合理反应机制。