Palladium-catalyzed 1,4-addition of arylboronic acids to unsaturated carbonyl compounds has been limitedly used for ketone and aldehyde derivatives. It was found that reaction with N-acylamides exceptionally proceeds with high yields and high enantioselectivities. A dicationic palladium-chiraphos catalyst 3 gave optically active beta-arylamides of up to 98% ee.