Tetrabutylammonium Bromide-Catalyzed Transfer Hydrogenation of Quinoxaline with HBpin as a Hydrogen Source
作者:Qi Guo、Jingchao Chen、Guoli Shen、Guangfu Lu、Xuemei Yang、Yan Tang、Yuanbin Zhu、Shiyuan Wu、Baomin Fan
DOI:10.1021/acs.joc.1c02537
日期:2022.1.7
A metal-free environmentally benign, simple, and efficient transfer hydrogenation process of quinoxaline has been developed using the HBpin reagent as a hydrogen source. This reaction is compatible with a variety of quinoxalines offering the desired tetrahydroquinoxalines in moderate-to-excellent yields with Bu4NBr as a noncorrosive and low-cost catalyst.
Rhodium-catalyzed transfer hydrogenation of quinoxalines with water as a hydrogen source
作者:Xia Zhang、Jingchao Chen、Ruhima Khan、Guoli Shen、Zhenxiu He、Yongyun Zhou、Baomin Fan
DOI:10.1039/c9ob02095k
日期:——
Rhodium-catalyzed transfer hydrogenation of quinoxalines with water as a hydrogensource was reported. The reaction allowed the simple preparation of tetrahydroquinoxalines under mild conditions. The deuterium-labelling experiment confirmed that water is the sole hydrogensource in the transfer hydrogenation reaction.