ChemInform Abstract: Substituted Alkyne Synthesis under Nonbasic Conditions: Copper Carboxylate-Mediated, Palladium-Catalyzed Thioalkyne—Boronic Acid Cross-Coupling.
Abstract
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ChemInform Abstract
A novel mild and efficient synthesis of internal alkynes (III) is presented, involving the palladium-catalyzed, copper carboxylate-promoted cross-coupling of thioalkynes (I) with boronic acids (II). The method tolerates a wide range of alkenyl, hetaryl, and aryl substituents (containing electron-donating or electron-withdrawing groups) at both the thioalkynes and the boronic acids.
