promote the activation and cyclization of arylcarbamate substrates to yield benzoxazolones via an intramolecular nitrene C–H insertion reaction. Investigation of the substrate scope shows that the reaction undergoes selective aromatic C(sp2)—H amination over more labile o-C(sp3)—H bonds. Observation of inverse secondary KIE (PH/PD = 0.42 ± 0.03) indicates involvement of aromatic electrophilic substitution
铑(II)可以通过分子内的氮杂C–H插入反应有效地促进芳基
氨基甲酸酯底物的活化和环化,从而生成
苯并恶唑啉酮。对底物范围的研究表明,该反应在更不稳定的o -C(sp 3)-H键上进行了选择性芳族C(sp 2)-H胺化反应。反向二次KIE的观察结果(P H / P D = 0.42±0.03)表明,芳族亲电取代机理参与了芳基CH酰胺化反应。