Catalysis of the reaction: 1,2-dihydroxynaphthalene + O2 = 2-hydroxychromene-2-carboxylate. C6 of the substrate molecular may have an NH2 group attached.
oxidoreductase activity, acting on paired donors, with incorporation or reduction of molecular oxygen, NAD(P)H as one donor, and incorporation of two atoms of oxygen into one donor +
oxidoreductase activity, acting on single donors with incorporation of molecular oxygen, incorporation of one atom of oxygen (internal monooxygenases or internal mixed function oxidases) +
oxidoreductase activity, acting on single donors with incorporation of molecular oxygen, incorporation of two atoms of oxygen +