Doebner–Miller cyclization was carried out in a two-phase solvent system. The method has shown to be advantageous to the yield and to the ease of the work-up process.
Silver-Promoted Versatile Cross-Dehydrogenative Coupling of Quinaldine with Usual Ethers
作者:Shoufeng Wang、Yafei Fan、Huaiqing Zhao、Jianfeng Wang、Shuxiang Zhang、Wengui Wang
DOI:10.1055/s-0039-1690697
日期:2019.11
great meaning and full of challenges, especially the use of inert ether molecules, such as THF as starting materials. A versatile and easily handled cross-dehydrogenative coupling between ethers and quinaldine is reported here. Compared to the developed reaction, Selectfluor is used as a mild oxidant, and a variety of functional groups are tolerated. Nitrogen protection, anhydrous systems, and external
Electrochemical anodic oxidation method for the incorporation of fluorine atom into quinoline ring is described. Our method involves a regioselective 5,8-difluorination of quinolines using HF:pyridine as a reagent/supporting electrolyte in an undivided electrochemical cell equipped with platinum anode and cathode. Various quinoline derivatives were subjected to electrolytic fluorination at room temperature