Heavily Substituted Atropisomeric Diarylamines by Unactivated Smiles Rearrangement of
<i>N</i>
‐Aryl Anthranilamides
作者:Romain Costil、Harvey J. A. Dale、Natalie Fey、George Whitcombe、Johnathan V. Matlock、Jonathan Clayden
DOI:10.1002/anie.201706341
日期:2017.10.2
Diarylamines find use as metal ligands and as structural components of drug molecules, and are commonly made by metal‐catalyzed C−N coupling. However, the limited tolerance to steric hindrance of these couplings restricts the synthetic availability of more substituted diarylamines. Here we report a remarkable variant of the Smiles rearrangement that employs readily accessible N‐aryl anthranilamides
二芳基胺可用作金属配体和药物分子的结构成分,通常由金属催化的CN偶联制得。然而,这些偶联对空间位阻的有限耐受性限制了更多取代的二芳基胺的合成可用性。在这里,我们报告了Smiles重排的一个显着变体,它使用易于获得的N-芳基邻氨基苯甲酰胺作为二芳基胺的前体。邻氨基苯甲酰胺原料的构象性倾向使芳基环接近并允许重排发生,尽管不存在吸电子取代基,甚至在空间上受到双重双邻位取代的底物的影响。一些二芳基胺产物可拆分为阻转异构对映体,并且是最早显示阻转异构的简单的二芳基胺。