The ionization constants of p- and m-2- and -3-thienyl-benzoic acids and -phenols have been determined in aqueous ethanol at 25 °C. The substituent constants σp, σm, σp–, and σ–m for 2-thienyl and 3-thienyl groups have then been calculated from the Hammett equation.
F. Fringuelli, G. Marino and A. Taticchi, J. Chem. Soc. B, 1970, 1595 DOI: 10.1039/J29700001595
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