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Selectivity of methylation of some new [1,2,3]triazolo[4,5-d]pyridazines and structure elucidation by 1H–15N NMR spectroscopy.

Authors :
Csámpai, Antal
Kövér, Péter
Hajós, György
Riedl, Zsuzsanna
Source :
Journal of Molecular Structure. Oct2002, Vol. 616 Issue 1-3, p73-78. 6p.
Publication Year :
2002

Abstract

Alkylation of some selected [1,2,3]triazolo[4,5-d]pyridazines having five or more nitrogen atoms capable for alkylation was investigated. Pyridyl derivatives substituted also on the [1,2,3]triazole ring gave quaternary pyridinium salts, whereas in the case of the analogues compounds unsubstituted at the triazole moiety, the alkylation of the triazole ring was also observed. Unambiguous structure elucidation was provided by 1H–15N HMBC experiments which also allowed the assignment of the 15N NMR shifts. [Copyright &y& Elsevier]

Details

Language :
English
ISSN :
00222860
Volume :
616
Issue :
1-3
Database :
Academic Search Index
Journal :
Journal of Molecular Structure
Publication Type :
Academic Journal
Accession number :
11844413
Full Text :
https://doi.org/10.1016/S0022-2860(02)00320-4