Enzymatic cyclizations using laccases: Multiple bond formation between dihydroxybenzoic acid derivatives and aromatic amines
Oxidative C-N bond formation followed by cyclization of dihydroxybenzoic acid derivatives with aromatic and heteroaromatic amines was catalyzed in the presence of oxygen by laccases [E.C. 1.10.3.2] from the white rot fungi Pycnoporus cinnabarinus and Myce