Enantioselective Copper(I)/Chiral Phosphoric Acid Catalyzed Intramolecular Amination of Allylic and Benzylic C−H Bonds
作者:Liu Ye、Yu Tian、Xiang Meng、Qiang‐Shuai Gu、Xin‐Yuan Liu
DOI:10.1002/anie.201911742
日期:2020.1.13
radical-involved enantioselective intramolecular C(sp3 )-H amination of not only allylic positions but also benzylic positions with broad substrate scope. The use of 4-methoxy-NHPI (NHPI=N-hydroxyphthalimide) as a stable and chemoselective HAT mediator precursor is crucial for the fulfillment of this transformation. Preliminary mechanistic studies indicate that a crucial allylic or benzylic radical intermediate