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Chemistry of Heterocyclic Compounds

, Volume 33, Issue 5, pp 551–556 | Cite as

1H NMR spectra of some nitro derivatives of 2-alkylamino-, 2-phenylamino-, 2-piperidyl-, 2-morpholyl-, 2-(N-alkyl-N-nitrosoamino)-, and 2-alkylnitramino-4(or 6)-methylpyridines

  • M. Wandas
  • B. Palasek
  • A. Puszko
  • H. Ban-Oganowska
Article
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Abstract

1H NMR spectra of some N-substituted 2-amino-3-nitro-and 2-amino-5-nitropyridines were measured and interpreted. Chemical shift assignments were based on existing chemical shift rules for substituted pyridines and spectral comparison with compounds of similar structure. The splitting of the methyl group signal of the methylamino group into a doublet testifies that the investigated compounds exist, in the amino form. Someortho-amino- andortho-alkylaminonitropicolines were found to give splitting of the amino signals due to intramolecular hydrogen bonding and steric hindrance.

Keywords

Methyl Hydrogen Bonding Pyridine Chemical Shift Steric Hindrance 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Plenum Publishing Corporation 1997

Authors and Affiliations

  • M. Wandas
  • B. Palasek
  • A. Puszko
  • H. Ban-Oganowska

There are no affiliations available

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