Copper(I)-Catalyzed One-Pot Synthesis of 2<i>H</i>-1,4-Benzoxazin-3-(4<i>H</i>)-ones from <i>o</i>-Halophenols and 2-Chloroacetamides
作者:Enguang Feng、He Huang、Yu Zhou、Deju Ye、Hualiang Jiang、Hong Liu
DOI:10.1021/jo802818s
日期:2009.4.3
We developed an efficient and convenient method for preparing N-substituted 2H-1,4-benzoxazin-3-(4H)-ones from 2-halophenols via a nucleophilic substitution with 2-chloroacetamides followed by a CuI-catalyzed coupling cyclization. A broad spectrum of substrates can be effectively employed to afford the desired products in good yields. Since this method involves simple reaction conditions, a short reaction
我们开发了一种高效便捷的方法,可通过2-氯乙酰胺的亲核取代反应从2-卤代苯酚制备N-取代的2 H -1,4-苯并恶嗪-3-(4 H)-酮,然后进行CuI催化的偶联环化反应。可以有效地使用各种各样的底物,以高产率提供所需的产物。由于该方法涉及简单的反应条件,较短的反应时间和较宽的底物范围,因此对于有效制备生物学上和医学上感兴趣的分子特别有吸引力。