40529-22-4Relevant articles and documents
Comparison of the Proton-transfer Behaviour of 4-(2,4-Dihydroxyphenylazo)- and 4-(2-Hydroxy-1-naphthylazo)-benzenesulphonates
Hibbert, Frank,Simpson, Gareth R.
, p. 985 - 990 (2007/10/02)
A linear dependence of rate on hydroxide ion concentration has been observed for removal of the intramolecularly hydrogen-bonded proton from 4-(2-hydroxy-1-naphthylazo)benzenesulphonate (2), in contrast to the copmplex rate dependence found for 4-(2,4-dihydroxyphenylazo)benzenesulphonate (1).Possible explanations are considered.The magnitude of the kinetic solvent isotope effect and the observation of general base catalysis in proton removal from (2) are discussed.
