Mechanistic insight into thermal 1,3- and 1,5-sulfonyl migrations of N-arenesulfonylphenothiazines and N-arenesulfonylphenoxazines
作者:Jiandong Wang、Kwon-Il Son、Jiaxi Xu
DOI:10.1007/s00706-016-1661-6
日期:2016.9
AbstractThe substrate scope and mechanistic insight of the thermal-induced 1,3- and 1,5-sulfonyl migration reactions of various sulfonamides have been investigated. The results indicate that both N-arenesulfonylphenothiazines and N-arenesulfonylphenoxazines can undergo 1,3- and 1,5-sulfonyl migrations to afford the corresponding aryl sulfone derivatives in modest regioselectivities and yields under
摘要已研究了各种磺酰胺的热诱导1,3-和1,5-磺酰基迁移反应的底物范围和机理的见解。结果表明,N-芳烃磺酰基吩噻嗪和N-芳烃磺酰基苯恶嗪均可经历1,3-和1,5-磺酰基迁移,从而在热和中性条件下以适度的区域选择性和收率提供相应的芳基砜衍生物。在交叉杂交和竞争性捕获实验的基础上,提出了磺酰胺键的均质裂解和分子间自由基-自由基偶联反应机理,用于1,3-和1,5-磺酰基的迁移。 图形概要