Selectivity in the photo??Fenton and photocatalytic hydroxylation of biphenyl??4??carboxylic acid and derivatives (viz. 4??phenylsalicylic acid and 5??phenylsalicylic acid)

T Hathway, DL Chernyshov…

Index: Hathway, Timothy; Chernyshov, Deborah Lipman; Jenks, William S. Journal of Physical Organic Chemistry, 2011 , vol. 24, # 12 p. 1151 - 1156

Full Text: HTML

Citation Number: 2

Abstract

Abstract The selectivity of hydroxylation of the distal rings of 4-phenylbenzoic acid, 4- phenylsalicylic acid, and 5-phenylsalicylic acid were determined using partial TiO 2- mediated photocatalytic degradation and photo-Fenton conditions. This separation of the binding site from the phenyl group being hydroxylated allows a less-biased evaluation. The hydroxylation regiochemistry behaves as qualitatively expected for an electrophilic ...