Visible-light-mediated Gomberg-Bachmann reaction: An efficient photocatalytic approach to 2-aminobiphenyls
作者:Ritu Kapoor、Ruchi Chawla、Lal Dhar S. Yadav
DOI:10.1016/j.tetlet.2019.02.022
日期:2019.3
efficient, metal-free and highly selective protocol for the synthesis of 2-aminobiphenyls via visible-light-mediated arylation of anilines using aryl diazonium salts (Gomberg-Bachmannreaction) has been reported. The reaction is an example of photoredox catalysed direct C(sp2)–H arylation of anilines using eosin Y as an organophotoredox catalyst. The presented visible-light-mediated environmentally sustainable
A Highly Para-Selective Copper(II)-Catalyzed Direct Arylation of Aniline and Phenol Derivatives
作者:Claire-Lise Ciana、Robert J. Phipps、Jochen R. Brandt、Falco-Magnus Meyer、Matthew J. Gaunt
DOI:10.1002/anie.201004703
日期:2011.1.10
In short order: A copper‐catalyzed Friedel–Crafts‐type strategy has been developed for the title reaction. An iterative CH arylation strategy has also been demonstrated for the functionalization of anilines by sequentially delivering different aromatic groups to the para, ortho, and meta positions (see scheme, Bn=benzyl, Piv=pivaloyl).