A procedure on palladium-catalyzed selective aminocarbonylation of styrenes with nitroarenes for the synthesis of α,β-unsaturated amides has been developed. A range of substituted α,β-unsaturated amides were synthesized in moderate to good yields. Interestingly, nitroarenes act as both a nitrogen source and oxidant, and Mo(CO)6 acts as a solid CO source and reductant in this catalytic system.