Electrochemical Difunctionalization of Terminal Alkynes: Access to 1,4-Dicarbonyl Compounds
Jingcheng Hu, Li Zeng, Jiayu Hu, Rui Ma, Xue Liu, Ying Jiao, Haoyu He, Siyu Chen, Zhexi Xu, Hongfei Wang, Aiwen Lei
Abstract
1,4-Dicarbonyl compounds are versatile scaffolds for the heterocycle synthesis, including the Paal-Knorr reaction. Herein, a feasible electrosynthesis method to access 1,4-dicarbonyl compounds has been developed from simple alkynes and 1,3-dicarbonyl compounds. When the undivided cell is combined with the constant current mode, aryl alkynes containing numerous medicinal motifs with 1,3-dicarbonyl esters or ketones react smoothly. External oxidant and catalyst-free conditions conform to the requirements of green synthesis.
Topics & Concepts
ElectrosynthesisChemistryElectrochemistryCombinatorial chemistryCatalysisArylOrganic chemistryElectrodeAlkylPhysical chemistryRadical Photochemical ReactionsCatalytic C–H Functionalization MethodsSulfur-Based Synthesis Techniques