Journal of Molecular Catalysis A-Chemical, Vol.219, No.1, 61-64, 2004
Copper (II) Schiff base catalysed aerobic oxidative coupling of 2-naphthols: an efficient and simple synthesis of binaphthols
Copper (II) Schiff base complexes of 2-(1-phenylethyl imino) methylphenol (3), methyl-N-(2-hydroxyphenyl)-L-serine (4) and methyl-N-(2-hydroxyphenyl)-L-tyrosine (5) were found to be an efficient catalyst for the aerobic oxidative coupling of 2-naphthols to binaphthols. Among the various copper (II) Schiff base complexes, the complex 3 was found to be the most reactive for this transformation. (C) 2004 Published by Elsevier B.V.