Palladium-catalyzed cross-coupling of 3-iodobut-3-enoic acid with organometallic reagents. Synthesis Of 3-substituted but-3-enoic acids

3-Substituted but-3-enoic acids were obtained in good yields under mild experimental conditions by palladium-catalyzed cross-coupling of 3-iodobut-3-enoic acid with organozinc or organotin compounds using PdCl(2)(MeCN)(2) as catalyst and DMF as solvent.