Title:Selective Catalytic Oxidation of Naphthol to Lawsone on Copper Phthalocyanine
VOLUME: 1 ISSUE: 3
Author(s):P. A. Pavaskar and A. V. Salker
Affiliation:Department of Chemistry, Goa University, Goa – 403 206, India.
Keywords:Copper phthalocyanine, 2-naphthol, Oxidation, Lawsone, HNQ, phthalocyanines, ether layer, TLC, aromatic phenyl rings, naphthalene, CuPc, lawsone, byproduct
Abstract:A green chemistry approach is used for the synthesis of copper phthalocyanine (CuPc) and its application for
the conversion of 2-naphthol to 2-hydroxy-1,4-naphthoquinone (HNQ, Lawsone) in alkaline aqueous solution using H2O2
as an oxidizing agent. The product obtained was compared with that of authentic sample and was found to be identical.
Further the effect of amount of catalyst, amount of NaOH, amount of starting material and amount of H2O2, on the rate of
reaction was investigated. The efficiency of The reaction was checked using different solvents, temperature, use of substituted
CuPc and other metals phthalocyanines.
