Visible-Light-Induced Intramolecular C(sp<sup>2</sup>)–H Amination and Aziridination of Azidoformates via a Triplet Nitrene Pathway
作者:Yipin Zhang、Xunqing Dong、Yanan Wu、Guigen Li、Hongjian Lu
DOI:10.1021/acs.orglett.8b01980
日期:2018.8.17
Catalytic intramolecular C–H amination and aziridination reactions of o-allylphenyl azidoformates have been achieved under visible-light irradiation, providing a mild, clean, and efficient method for the synthesis of useful benzoxazolones and [5.1.0] bicyclic aziridines. Mechanistic studies suggest that a triplet nitrene acts as the reactive intermediate. The chemoselectivity of the reaction, with alkyl
邻烯丙基苯基叠氮基甲酸酯的催化分子内C–H氨基化和叠氮化反应已在可见光照射下完成,为合成有用的苯并恶唑酮和[5.1.0]双环氮丙啶提供了温和,清洁和有效的方法。机理研究表明,三重态氮烯起反应性中间体的作用。与烷基烯烃叠氮化≫缺电子烯烃叠氮化≈C(sp 2)–H胺化≫ C(sp 3)–H胺化反应的化学选择性,在理解可见光方面可能具有指导意义诱导的三重态氮转化反应。