Aryl substituent effects upon the rate constants for the esterification of a series of arylmethanols in neat trifluoroacetic acid are in accordance with a reverse AAC2 mechanism for those substrates bearing an electron-withdrawing substituent (ρ=–0·79), whereas a reverse AAL1 mechanism is indicated for those bearing a methyl substituent.
P. Kavanagh, A. C. Knipe and W. E. Watts, J. Chem. Soc., Chem. Commun., 1979, 905 DOI: 10.1039/C39790000905
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