Transition-metal-free oxidative C5 C–H-halogenation of 8-aminoquinoline amides using sodium halides
作者:Ying Wang、Yang Wang、Kai Jiang、Qian Zhang、Dong Li
DOI:10.1039/c6ob02079h
日期:——
A simple and efficient transition-metal-free oxidative halogenation (Cl, Br) of the C5 C–H bond of 8-aminoquinoline amides has been developed. This method employed low-cost and innoxious sodium halides as halogenation reagents and oxone as an oxidant. The reactions demonstrated air and moisture tolerance, and good functional group compatibility, giving highly selective C5-halogenated products in good
The oxygenation of 8-aminoquinoline amides by benzoyl peroxide at the C5 position in water is developed in the absence of a transition metal catalyst, affording the desired products in moderate to good yields of up to 88%. Mechanism studies reveal that the reaction would involve a radical process.
Cobalt-Catalyzed Remote C-4 Functionalization of 8-Aminoquinoline Amides with Ethers via C–H Activation under Visible-Light Irradiation. Access to α-Heteroarylated Ether Derivatives
作者:Tubai Ghosh、Pintu Maity、Brindaban C. Ranu
DOI:10.1021/acs.orglett.7b03955
日期:2018.2.16
A cobalt-catalyzedselective remote C-4alkylation of 8-aminoquinoline amides via C–H activation under irradiation with a CFL lamp in the presence of eosin Y at room temperature has been achieved. A series of pharmaceutically important C-4quinoline amide-substituted ether derivatives has been obtained by this procedure. The C-4 functionalization of quinoline amides with inert ether is of much significance