Intramolecular Metal-Free Oxidative Aryl-Aryl Coupling: An Unusual Hypervalent-Iodine-Mediated Rearrangement of 2-Substituted<i>N</i>-Phenylbenzamides
作者:Siyun Shang、Daisy Zhang-Negrerie、Yunfei Du、Kang Zhao
DOI:10.1002/anie.201402925
日期:2014.6.10
Hypervalent‐iodine‐mediated oxidative coupling of the two aryl groups in either 2‐acylamino‐N‐phenyl‐benzamides or 2‐hydroxy‐N‐phenylbenzamides, with concomitant insertion of the ortho‐substituted N or O atom into the tether, has been described for the first time. This unusual metal‐free rearrangement reaction involves an oxidative C(sp2)C(sp2) aryl–aryl bond formation, cleavage of a C(sp2)C(O) bond
已经完成了2-酰基氨基-N-苯基苯甲酰胺或2-羟基-N-苯基苯甲酰胺中两个芳基的高价碘介导的氧化偶合,同时将邻位取代的N或O原子同时插入到系链中首次描述。这种不寻常的不含金属的重排反应包括氧化C(SP 2) C(SP 2)芳基-芳基键的形成,一个C的裂解(SP 2) C(O)键,和内酰胺化/内酯化。此外,不对称的二芳基化合物可以通过除去环化产物内的系链而容易地获得。