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Recent Progress in the Addition Reaction of Electron-Rich Alkynes and Carboxylic Acids

Abstract Electron-rich alkynes, in which an electron-donating atom or group is attached to the triple bond, have been widely used as versatile building blocks in organic synthesis, due to their unique chemical reactivity. As an important part of electron-rich alkyne chemistry, the addition reaction between electron-rich alkynes and carboxylic acids received considerable attention these years, and various investigations and advances have been reported. The progress of addition reactions between electron-rich alkynes and carboxylic acids is summarized, and the future perspective is prospected.