Regioselective Friedel–Crafts Reactions of N-Substituted Glyoxylamide with Indoles Catalyzed by Brønsted Acid
作者:Yong Wu、Zhen Zhan、Renjun Li、Yang Zheng、Yan Zhou、Li Hai
DOI:10.1055/s-0035-1560462
日期:——
An efficient regioselective Friedel–Craftsreaction of a series of N-substituted glyoxylamide with indoles catalyzed by Bronsted acid was developed. The reactions proceeded smoothly at room temperature and the corresponding N-substituted 2-hydroxy-2-(1H-indol-3-yl) acetamides were afforded in moderate to good yields (up to 89%). When 2 M HCl was used, the bisindole compounds were obtained in good to
A novel and green H2O2-promoted oxidative amidation of 2-oxoaldehydes with amines to synthesize unsymmetrical oxamides has been developed. The reactions proceeded smoothly at room temperature under metal-free conditions and generated the corresponding products in good yields. This methodology has a broad substrate scope and opens up an interesting and attractive avenue for the synthesis of unsymmetrical
已开发出新颖且绿色的H 2 O 2促进的2-氧代醛与胺的氧化酰胺化反应,以合成不对称的草酰胺。反应在室温下在无金属的条件下平稳进行,并以良好的产率产生相应的产物。该方法具有广泛的底物范围,并为合成不对称的草酰胺衍生物开辟了有趣的诱人途径。