3-氯喹喔啉酮与各种含氮亲核试剂(如(杂)芳族和脂族酰胺)以及一些具有挑战性的弱亲核氮化合物(包括内酰胺,氨基甲酸酯和含NH的吡咯)的有效且通用的钯催化偶联是描述。在所有情况下,反应都会在二恶烷使用Pd(OAc)2作为催化剂,使用Xantphos作为配体,使用K 2 CO 3作为碱,可以很好地实现3- N-取代的喹喔啉酮类产品的偶联。
efficient synthetic route to construct a variety of 3-amidated quinoxalin-2(1H)-ones was developed via transition-metal free direct oxidative amidation of quinoxalin-2(1H)-ones with amidates usingSelectfluor reagent as a mild oxidant. This protocol features mild reaction conditions, operational simplicity, broad substrate scope, and good to excellent yields.
一种实用的和有效的合成路线来构造各种3-酰胺化喹喔啉-2(1 H ^ -酮)的开发是通过喹喔啉-2-的过渡金属无直接氧化酰胺化(1 ħ) -酮使用的Selectfluor试剂作为酰胺化温和的氧化剂。该方案的特点是反应条件温和,操作简便,底物范围广,收率高至优异。
A palladium-catalyzed coupling of 3-chloroquinoxalinones with various nitrogen-containing nucleophiles
An efficient and general palladium-catalyzedcoupling of 3-chloro-quinoxalinones with a variety of nitrogen-containingnucleophiles such as (hetero)aromatic and aliphatic amides as well as some challenging weakly nucleophilic nitrogen compounds including lactams, carbamates and NH-containing azoles is described. In all cases, the reactions take place rapidly and cleanly in dioxane using Pd(OAc)2 as
3-氯喹喔啉酮与各种含氮亲核试剂(如(杂)芳族和脂族酰胺)以及一些具有挑战性的弱亲核氮化合物(包括内酰胺,氨基甲酸酯和含NH的吡咯)的有效且通用的钯催化偶联是描述。在所有情况下,反应都会在二恶烷使用Pd(OAc)2作为催化剂,使用Xantphos作为配体,使用K 2 CO 3作为碱,可以很好地实现3- N-取代的喹喔啉酮类产品的偶联。