A straightforward palladium-catalyzed oxidative C-3 arylation of quinoxalin-2(1H)-ones with arylboronicacids is reported. This protocol is compatible with a wide range of functional groups and allows construction of various biologically important quinoxalin-2(1H)-one backbones.
Visible-light-induced C H arylation of quinoxalin-2(1H)-ones in H2O
作者:Hanyang Bao、Ziyun Lin、Mengshi Jin、Hongdou Zhang、Jun Xu、Bajin Chen、Wanmei Li
DOI:10.1016/j.tetlet.2021.152841
日期:2021.3
An efficient visible-light-induced CH arylation of quinoxalin-2(1H)-ones in H2O is developed, which has the advantages of mild reaction conditions, environmental friendliness and good functional group tolerance. This strategy provides a simple operation method to access various 3-aryl quinoxalin-2(1H)-ones in moderate to good yields.
Mild and Direct C–H Arylation of Quinoxalin-2(1H)-ones with Aryldiazonium Salts under Metal-Free Conditions
作者:Ronghua Zhang、Kun Yin
DOI:10.1055/s-0036-1589139
日期:2018.3
A mild and direct C–H arylation of quinoxazolin-2(1H)-ones with aryldiazonium salts has been developed. A wide variety of 3-arylquinoxazolin-2(1H)-ones were synthesized in up to 92% yield at room temperature under metal-free conditions. This strategy tolerates a wide range of functional groups and shows environmental friendliness and practicality.
Transition Metal-Free Iodosobenzene-Promoted Direct Oxidative 3-Arylation of Quinoxalin-2(<i>H</i>)-ones with Arylhydrazines
作者:Sanjay Paul、Ji Hyeon Ha、Ga Eul Park、Yong Rok Lee
DOI:10.1002/adsc.201700070
日期:2017.5.2
A transition metal‐free iodosobenzene‐promoted direct oxidative 3‐arylation of quinoxalin‐2(H)‐ones was developed using various arylhydrazines under air. The protocol affords a variety of 3‐arylquinoxalin‐2(H)‐one derivatives in moderate to good yields. This method provides a rapid access to biologically interesting benzo[g]quinoxalinones and pyrido[3,4‐b]pyrazinones. The present methodology features
在空气中使用各种芳基肼开发了无过渡金属的碘代苯促进喹喔啉-2(H)-1的直接氧化3芳基化反应。该协议以中等到良好的产率提供了多种3-芳基喹喔啉-2(H)-one衍生物。这种方法提供了快速获得生物学上令人感兴趣的苯并[ g ]喹喔啉酮和吡啶并[3,4- b ]吡嗪酮的途径。本方法在温和的反应条件下具有较高的官能团耐受性,包括碱敏基团以及烯丙基和苄基取代的喹喔啉-2(H)-酮。
Transition Metal-Free Direct C-3 Arylation of Quinoxalin-2(1<i>H</i>
)-ones with Arylamines under Mild Conditions
作者:Jinwei Yuan、Shuainan Liu、Lingbo Qu
DOI:10.1002/adsc.201701058
日期:2017.12.11
A transition metal‐freedirect C‐3 arylation of quinoxalin‐2(1H)‐ones with arylamines has been explored. This reaction proceeded smoothly through a radical process undermildconditions and produced the desired arylation products in good yields. The reactions proceeded efficiently with a broad range of substrates and functional group tolerance.