2-oxoglutarate (OG)- and Fe(II)-dependent dioxygenase (2OGD) involved in scopoletin and umbelliferone biosynthesis (PubMed:22168819). Converts feruloyl CoA into 6'-hydroxyferuloyl CoA, and p-coumaroyl CoA into 2,4-dihydroxycinnamoyl-CoA (PubMed:22168819). Has no activity with cinnamic acid, caffeic acid, p-coumaric acid, ferulic acid, cinnamoyl-CoA and caffeoyl-CoA (PubMed:22168819). (E)-4-coumaroyl-CoA + 2-oxoglutarate + O2 = (E)-2,4-dihydroxycinnamoyl-CoA + CO2 + succinate (E)-feruloyl-CoA + 2-oxoglutarate + O2 = (E)-6-hydroxyferuloyl-CoA + CO2 + succinate Binds 1 Fe(2+) ion per subunit. Repressed by the competitive inhibitor psoralen, but not by umbelliferone, xanthotoxin, bergapten and isopimpinellin. kcat is 0.46 sec(-1) with feruloyl-CoA as substrate (PubMed:22168819). kcat is 0.71 sec(-1) with p-coumaroyl-CoA as substrate (PubMed:22168819). Phenylpropanoid metabolism. Induced by UV-B in leaves and petioles, but not in roots and stems. Belongs to the iron/ascorbate-dependent oxidoreductase family.