Formation of 6-formyl-7-hydroxy-8-methoxycoumarin and 5, 8-dioxopsoralen by reaction of 8-methoxypsoralen with H2O2 and potassium superoxide (KO2) catalyzed …

SMS CHAUHAN, B Sahoo, PP Mohapatra…

Index: Chauhan; Sahoo; Mohapatra; Kalra; Gulati Chemical and Pharmaceutical Bulletin, 2001 , vol. 49, # 9 p. 1232 - 1233

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Citation Number: 4

Abstract

The oxidation of 8-methoxypsoralen (2) with hydrogen peroxide and potassium superoxide catalyzed by 5, 10, 15, 20-(2, 4, 6-trimethylphenyl) porphyrinatoiron (III) chlorides [Me 12- TPPFe (III) Cl](1a) and 5, 10, 15, 20-(2, 6-dichlorophenyl) porphyrinatoiron (III) chlorides [Cl 8 TPPFe (III) Cl](1b) in dichloromethane gives 6-formyl-7-hydroxy-8-methoxycoumarin (3) in moderate yields, whereas the oxidation of (2) with H 2 O 2 catalyzed by 5, 10, 15, 20-(2, 6- ...

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