Enantioselective Arylation of Benzylic C−H Bonds by Copper‐Catalyzed Radical Relay
作者:Wen Zhang、Lianqian Wu、Pinhong Chen、Guosheng Liu
DOI:10.1002/anie.201902191
日期:2019.5.6
A novel enantioselective copper‐catalyzed arylation of benzylic C−H bonds, using alkylarenes as a limiting reagent, has been developed. A chiral bisoxazoline ligand bearing an acetate ester moiety plays a key role in both the reactivity and enantioselectivity of the reaction. The reaction provides efficient access to various chiral 1,1‐diarylalkanes in good yields with good to excellent enantioselectivities
Enantioselective Intramolecular <i>ortho</i> Photocycloaddition Reactions of 2‐Acetonaphthones
作者:Peng Yan、Simone Stegbauer、Qinqin Wu、Elena Kolodzeiski、Christopher J. Stein、Ping Lu、Thorsten Bach
DOI:10.1002/anie.202318126
日期:2024.3.22
The intramolecular ortho photocycloaddition of 2-acetonaphthones has been achieved with high enantioselectivity. The catalytic use of a chiral Lewis acid was critical for the success of the reaction and its mode of action has been elucidated by mechanistic experiments and calculations. The primary photocycloaddition products underwent photochemically or thermally a variety of consecutive reactions