Abstract
A convenient method is proposed for the preparation of new derivatives of free heterocyclic bases of imidazo[1,2- a ]pyridine, pyrido[1,2- a ]benzimidazole, and [1,2,4]triazolo[4,3- a ]pyridine series. This method entails the dealkylation of N -(2-cyanoethyl)- or N -benzylazolopyridinium quaternary salts in the presence of bases and reaction with ammonium formate in the presence of Pd/C, respectively. Authors: L. M. Potikha, A. R. Turelik, A. V. Shelepyuk, and V. A. Kovtunenko. English translation in Chemistry of Heterocyclic Compounds , 2012, 48 (2), pp 343-354 http://link.springer.com/article/10.1007/s10593-012-0995-1
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