cross-dehydrogenative coupling between quinoxalinones (sp2 C–H) and amines (N–H) in the presence of catalytic iodine is reported. The reaction yields 3-aminoquinoxalinones in moderate to high yields under ambient conditions in dioxane as solvent and aqueous tert-butyl hydroperoxide (TBHP) as the terminal oxidant. The reaction is highly versatile and exhibits good functional group tolerance with a range of primary
据报道,在催化
碘存在下,
喹喔啉酮(sp 2 C–H)和胺(NH)之间无
金属的交叉脱氢偶联。该反应在环境条件下,以
二恶烷为溶剂,以叔
丁基氢过氧化物水溶液(
TBHP)作为末端氧化剂,以中等至高产率产生3-
氨基
喹喔啉。该反应是高度通用的,并且在一系列
伯胺和仲胺中表现出良好的官能团耐受性。它为获得药物活性的3-
氨基
喹喔啉酮衍
生物提供了实用途径。初步的机理研究表明,胺的原位
碘化是假定的活化方式。