… = 2, 2??Diphenyl??1??(2, 4, 6??trinitrophenyl) hydrazyl) Radical??Scavenging Reaction of Protocatechuic Acid Esters (= 3, 4??Dihydroxybenzoates) in Alcohols: Formation of …

S Saito, H Gao, J Kawabata

Index: Saito, Shizuka; Gao, Hong; Kawabata, Jun Helvetica Chimica Acta, 2006 , vol. 89, # 4 p. 821 - 831

Full Text: HTML

Citation Number: 9

Abstract

Abstract Protocatechuic acid esters (= 3, 4-dihydroxybenzoates) scavenge ca. 5 equiv. of radical in alcoholic solvents, whereas they consume only 2 equiv. of radical in nonalcoholic solvents. While the high radical-scavenging activity of protocatechuic acid esters in alcoholic solvents as compared to that in nonalcoholic solvents is due to a nucleophilic addition of an alcohol molecule at C (2) of an intermediate o-quinone structure, thus regenerating a ...