Enantioselective α-Allylation of Anilines Enabled by a Combined Palladium and Photoredox Catalytic System
作者:Hong-Hao Zhang、Jia-Jia Zhao、Shouyun Yu
DOI:10.1021/acscatal.0c00871
日期:2020.4.17
branch-regioselective α-allylation of N-methyl anilines under dual palladium/photoredoxcatalysis is described. Readily available N-methyl anilines are used as formal “hard” alkyl nucleophiles without preactivation. Acetic acid is the only side product, which leads to a high atom economy of this reaction. This protocol shows good functional group tolerance and broad scope. A range of chiral homoallylic amines were
The stereochemistry of the elimination reaction of acyclic (E)-allylic acetates into the corresponding 1,3-dienes catalyzed by palladium in the presence of a base was investigated. The Z/E ratios o...
Enantioselective reductive allylic alkylation enabled by dual photoredox/palladium catalysis
作者:Sheng Tang、Hong-Hao Zhang、Shouyun Yu
DOI:10.1039/d2cc06705f
日期:——
A dual photoredox/palladium catalyzed regio- and enantioselective reductive cross-coupling of allylic acetates with tertiary/secondary alkyl bromides has been achieved, and Hantzsch ester is used as a homogeneous organic reductant. This straightforward protocol enables the stereoselective construction of C(sp3)–C(sp3) bonds under mild reaction conditions. Mechanistic studies suggest that this reaction