Kinetics and mechanism of hydrogen peroxide oxidation of chromone??3??carboxaldehydes in aqueous acid and micellar media

M Matha, LBT Sundari, KC Rajanna…

Index: Matha; Sundari; Rajanna; Saprakash International Journal of Chemical Kinetics, 1996 , vol. 28, # 9 p. 637 - 648

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Citation Number: 6

Abstract

Abstract Oxidation of chromone-3-carboxaldehyde (CCA) and substituted analogues by H 2 O 2 has been carried out in aqueous acid (HCl and H 2 SO 4) and micellar media. Reaction kinetics indicated order in [CCA] as well as [H 2 O 2] to be unity while it is a fraction (1> n> O) in [acid]. Reaction rates were found to be faster in the solvents of low-dielectric constant (D). Added salt (KCl or (NH 4) 2 SO 4) increased the rate of oxidation marginally. On the basis ...