Studies on the Infrared Spectra of Heterocyclic Compounds. VII. Hydrogen-Bond Effect on Pyridine 1-Oxide and its Derivatives
スポンサーリンク
概要
- 論文の詳細を見る
Infrared investigations were made on the hydrogen-bond effect of pyridine 1-oxide and its derivatives with some proton donors. The assignment for N-O stretching frequency (strong absorption in the region of 1190 and 1320 cm^<-1>) was further confirmed by observing the spectral change of N-oxide compounds following hydrogen-bond formation with methanol in non-polar solvent. The hydrogen-bonding ability of various derivatives was estimated in terms of the magnitude of shift in bonded OH frequency of methanol and an excellent linear relation was found by plotting these frequencies against the σ-values of the substituents. Anomalous behavior in 2-methyl derivatives was also pointed out and discussed. From a comparison of the frequency shift of the carbonyl stretching absorption in methanol and water, it was found that the electron-releasing ability of the N-oxide function towards 4-position of the ring is largely decreased in polar solvent with active hydrogen.
- 公益社団法人日本薬学会の論文
- 1959-10-20
著者
関連論文
- Studies on the Infrared Spectra of Heterocyclic Compounds. IV. Infrared Spectra of Monosubstituted Pyridine Derivatives.
- 異項環化合物の赤外部吸収スペクトルの研究(第3報)アルキルピリジン1-オキシドの赤外部スペクトル
- 異項環化合物の赤外部吸収スペクトルの研究(第2報)メチルキノリンの赤外部スペクトル
- 異項環化合物の赤外部吸収スペクトルの研究(第1報)アルキルピリジンの赤外部スペクトル
- Infrared Absorption Spectra of Aldonitrones. I. Infrared Spectra of Benzaldehyde N-Methyl and N-Phenyl Nitrones.
- Studies on the Infrared Spectra of Heterocyclic Compounds. IX. : Infrared Spectra of Monosubstituted Quinolines and their N-Oxides.
- Studies on the Infrared Spectra of Heterocyclic Compound. VIII. Infrared Spectra of Substituted Pyrazines and their N-Oxides
- Studies on the Infrared Spectra of Heterocyclic Compounds. VII. Hydrogen-Bond Effect on Pyridine 1-Oxide and its Derivatives
- Studies on the Infrared Spectra of Heterocyclic Compounds. VI. Infrared Spectra of Substituted α-Pyridones and α-Quinolones. (1). The Region from 2000 to 4000cm^.
- Studies on the Infrared Spectra of Heterocyclic Compounds. V. Infrared Spectra of Substituted Pyridine 1-Oxides.