ISSN print edition: 0366-6352 ISSN electronic edition: 1336-9075 Registr. No.: MK SR 9/7 Published monthly

Reexamination of the application of linear free energy relationships to the azaheterocyclic systems. III. Substituent effects on pKa of five- and fused five- and six-membered ring systems

P. Tomasik, R. Zalewski, and J. Chodzinski

Department of Organic Chemistry, Pedagogical University, 42 201 Czestochowa, Poland

Abstract: The acid and basic pK_a values of purines are correlated according to both the Hammett and 2-parameter Taft equations. The substituent effects on the basicity of imidazole and benzimidazole are also discussed in terms of these equations.

Full paper in Portable Document Format: 331a105.pdf

Chemical Papers 33 (1) 105–109 (1979)