Amination of Aromatic Halides and Exploration of the Reactivity Sequence of Aromatic Halides
作者:Chu Yang、Feng Zhang、Guo-Jun Deng、Hang Gong
DOI:10.1021/acs.joc.8b02588
日期:2019.1.4
A base-promoted amination of aromatic halides has been developed using a limited amount of dimethylformamide (DMF) or amine as an amino source. Various aryl halides, including F, Cl, Br, and I, have been successfully aminated in good to excellent yields. Although the amination of aromatic halides with amines or DMF is usually considered as an aromatic nucleophilic substitution (SNAr) process, and the
使用有限量的二甲基甲酰胺(DMF)或胺作为氨基源,已经开发出碱促进的芳香族卤化物胺化。包括F,Cl,Br和I在内的各种芳基卤化物均已成功地以良好或优异的收率胺化。尽管通常将胺或DMF芳香卤化物胺化视为芳香亲核取代(S NAr)过程,芳族卤化物的反应性为F> Cl> Br> I,发现该体系中芳族卤化物的反应性为I> Br≈F> Cl。该方案还显示了对多卤代芳烃的良好区域选择性。由于操作简单,氨基源和芳族卤化物的不受限制的可用性,无过渡金属的条件,不需要溶剂以及可扩展性,该协议对于工业应用很有价值。