Copper-Catalyzed Alkylation of Benzoxazoles with Secondary Alkyl Halides
作者:Peng Ren、Isuf Salihu、Rosario Scopelliti、Xile Hu
DOI:10.1021/ol300348w
日期:2012.4.6
Copper-catalyzed direct alkylation of benzoxazoles using nonactivated secondary alkylhalides has been developed. The best catalyst is a new copper(I) complex (1), and the reactions are promoted by bis[2-(N,N-dimethylamino)ethyl] ether.
Radical Substitution of Polyfluoroarenes and Heteroarenes Promoted by Photoredox Activation of Organozinc Iodides
作者:Anton A. Gladkov、Vitalij V. Levin、Alexander D. Dilman
DOI:10.1002/adsc.202300757
日期:2023.10.13
Aromaticcompounds interact with organozinc reagents under photoredox conditions, leading to the substitution products. The reaction is performed under blue light irradiation via in situ generated organozinc reagents (Barbier conditions), which are oxidized by the photocatalyst, followed by radical attack at the aromatic substrate. The method works with polyfluorinated arenes, 2-chlorobenzoxazoles