120533-67-7Relevant academic research and scientific papers
EQUILIBRIUM NH-ACIDITY OF 1,4-DIHYDROPYRIDINES AND 4,5-DIHYDROINDENOPYRIDINES
Vigante, B. A.,Terekhova, M. I.,Ozols, Ya. Ya.,Petrov, E. S.,Dubur, G. Ya.
, p. 1028 - 1031 (2007/10/02)
The patterns governing the dependence of NH-acidity on the presence of α-, β- and γ-substituents in the 1,4-dihydropyridine ring and on their nature have been established by comparison of the pKa values of monocyclic 1,4-dihydropyridines and 4,
ETHYL ESTERS OF 1,4-DIHYDROPYRIDINE-3,5-DICARBOTHIONIC ACIDS
Vigante, B. A.,Ozols, Ya. Ya.,Chekavichus, B. S.,Dubur, G. Ya.
, p. 1017 - 1023 (2007/10/02)
Methods for the synthesis of the esters of 1,4-dihydropyridine-3,5-dicarbothionic acids by the thionation of the carbonyl analogs with Lawesson's reagent are developed.The influence of the substituents at the nitrogen atom on the course of the thionation reaction is considered.The physicochemical characteristics of this series of substances are analyzed; their reactivity in the reactions of N-alkylation, oxidation, and anion formation is studied.
