Metal-free oxidative ring contraction of benzodiazepinones: an entry to quinoxalinones
作者:Hasan Mtiraoui、Kevin Renault、Morgane Sanselme、Moncef Msaddek、Pierre-Yves Renard、Cyrille Sabot
DOI:10.1039/c7ob00205j
日期:——
A novel and practical synthesis of 3-benzoylquinoxalin-2(1H)-ones from benzodiazepin-2-ones in two steps from commercially available starting materials is reported. The reaction was achieved in the presence of N-bromosuccinimide in DMSO which served both as a solvent and an oxidant. Significantly, the yet unknown ketone to alcohol fluorescence turn-on of benzoylquinoxalinones was unveiled through the
从市售的起始原料中分两步从苯二氮杂-2-酮合成了一种新颖实用的3-苯甲酰基喹喔啉-2(1 H)-酮。该反应是在DMSO中N-溴琥珀酰亚胺的存在下完成的,该DMSO既用作溶剂又用作氧化剂。值得注意的是,通过制备荧光标记的胆固醇偶联物,揭示了苯甲酰基喹喔啉酮的酮向醇荧光开通的未知的酮。