Reaction catalyzed by medium-chain acyl-CoA dehydrogenase (1.3.8.7)

		+			=			+
	[4-(dimethylamino)phenyl]propionyl-CoA	+		ferricenium hexafluorophosphate	=		4-(dimethylamino)cinnamoyl-CoA	+		ferrocenium hexafluorophosphate