Mn(OAc) 3 *2H 2 O promoted addition of arylboronic acids to quinoxalin-2-ones
作者:Boora Ramesh、C. Ravikumar Reddy、G. Ravi Kumar、B.V. Subba Reddy
DOI:10.1016/j.tetlet.2017.12.085
日期:2018.2
A simple method has been developed for the synthesis of 3-aryl quinoxalin-2-one derivatives through an oxidative cross-coupling of arylboronicacids with quinoxalin-2-ones using a readily available oxidant Mn(III) acetate dihydrate. This method provides 3-aryl quinoxalin-2-one scaffolds with a broad substrate scope.
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.
Rh(<scp>iii</scp>)-catalyzed spiroannulation of 3-arylquinoxalin-2(1<i>H</i>)-ones with alkynes: practical access to spiroquinoxalinones
作者:Yuanfei Zhang、Ting Huang、Xinghua Li、Min Zhang、Ying Song、Kelin Huang、Weiping Su
DOI:10.1039/d0ra03348k
日期:——
The use of imines as a H acceptor for Rh(iii)-catalyzed spirocyclization of 3-arylquinoxalinones and alkynes via a C–H functionalization/[3 + 2] annulation sequence has been achieved.