aliphatic alcohols (also as solvent) allow to produce useful α,β-unsaturatedesters in good to excellent yields at 70 °C. Efficient regioselectivity could be controlled in the presence of N-ligands while the P-ligands had no influence on the conversion of substrates and the chemo/regioselectivity of target products. By involving N-ligand 4,7-dimethyl-1,10-phenanthroline in the catalytic system, α,β-unsaturated
Enantioselective N–H Bond Insertion Reaction of Anilines Enabled by Ruthenium and Chiral Phosphoric Acid Cooperative Catalysis
作者:Shaoran An、Yan Zhu、Jiangtao Sun
DOI:10.1021/acs.orglett.4c02135
日期:2024.7.26
The enantioselective carbene insertion into N–H bonds of anilines has been realized by cooperativecatalysis of ruthenium complexes and chiralphosphoricacids, providing the expected α-aryl glycines in moderate to good yields with high enantioselectivity. Typically, by slightly modifying the reaction conditions, this approach allows the N–H bond insertion reaction to be effective for both α-aryl and