Efficient Palladium‐Catalyzed Synthesis of Sulfonyl‐Substituted Vinyl Arenes: Hydrazones Provide the Cross‐Coupling Partner and Nucleophile Components.

A practical and efficient approach for the synthesis of various sulfonyl-substituted vinyl arenes is reported. In the process, hydrazones provide coupling partners for the Pd-catalyzed cross-coupling with aryl halides and sulfinate salts as nucleophiles, which realizes minimal waste and excellent atom economy.