Collect. Czech. Chem. Commun. 1981, 46, 2687-2695

Electronic spectra of 2- and 4-substituted 3,5-dicyano-6-methylpyridines

Dušan Ilavskýa and Josef Kuthanb

a Department of Organic Chemistry, Slovak Institute of Technology, 880 37 Bratislava
b Institute of Organic Chemistry and Biochemistry, Czechoslovak Academy of Sciences, 166 10 Prague 6


The PPP method has been used for calculation of theoretical spectra of the compounds III-X and IIIa-Xa, and the results obtained have been confronted with available experimental absorbance curves. It has been shown that the theoretical spectra can be used for successful interpretation of tautomeric equilibrium between 2-pyridone XI and 2-hydroxypyridine X as well as for prediction of spectral characteristics of the not yet synthetized series IIIa-Xa.