The Journal of organic chemistry

Kinetic study of the hydrogen abstraction reaction of the benzotriazole-N-oxyl radical (BTNO) with H-donor substrates

P Brandi, C Galli, P Gentili

Index: Brandi, Paolo; Galli, Carlo; Gentili, Patrizia Journal of Organic Chemistry, 2005 ,  vol. 70,  # 23  p. 9521 - 9528

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Citation Number: 39

Abstract

The aminoxyl radical (> NO) BTNO (benzotriazole-N-oxyl) has been generated by the oxidation of 1-hydroxybenzotriazole (HBT;> N-OH) with a CeIV salt in MeCN. BTNO presents a broad absorption band with λmax 474 nm and ε 1840 M-1 cm-1, and spontaneously decays with a first-order rate constant of 6.3× 10-3 s-1 in MeCN at 25° C. Characterization of BTNO radical by EPR, laser flash photolysis, and cyclic voltammetry is provided. The ...