Asymmetric Photocatalytic C–H Functionalization of Toluene and Derivatives
作者:Daniele Mazzarella、Giacomo E. M. Crisenza、Paolo Melchiorre
DOI:10.1021/jacs.8b05240
日期:2018.7.11
from the corresponding enals. The process combines the oxidative power of a chiral excited-state iminium ion and the basic nature of its counteranion to trigger the generation of benzylic radicals by means of a sequential multisite proton-coupled electron transfer mechanism. This study shows that feedstock chemicals generally used as solvents, such as toluene and xylene derivatives, can be used as
Palladium-Catalyzed Enantioselective Redox-Relay Heck Arylation of 1,1-Disubstituted Homoallylic Alcohols
作者:Zhi-Min Chen、Margaret J. Hilton、Matthew S. Sigman
DOI:10.1021/jacs.6b06994
日期:2016.9.14
An enantioselective redox-relay oxidative Heck arylation of 1,1-disubstituted alkenes to construct β-stereocenters was developed using a new pyridyl-oxazoline ligand. Various 1,2-diaryl carbonyl compounds were readily obtained in moderate yield and good to excellent enantioselectivity. Additionally, analysis of the reaction outcomes using multidimensional correlations revealed that enantioselectivity