Nitrogen bridgehead compounds. Part 69. Studies on quinolizine derivatives. Part 3. Infrared and 1H NMR spectroscopic studies of quinolizine derivatives and their monocyclic tautomers

Angéla Schwartz, Zoltán Pál, László Szabó, I. Hermecz, Zoltán Mészáros

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

Infrared and 1H nmr spectra of 4‐oxo, 1, and 4‐imino, 2, quinolizine derivatives or their monocyclic tautomers 3, 4 have been comparatively studied. The number of ethoxycarbonyl groups, the signals of the hetero proton, the C(9)‐H, and the C(6)‐CH3 group in the 1H nmr spectrum, moreover the N‐H stretching vibration bands proved to be diagnostically important for monocyclic or bicyclic as well as for 4‐oxo or 4‐imino structures. A weak intramolecular hydrogen bridge in compounds 2b and 2f, a strong chelate type hydrogen bridge in 4E and 4F=G could have been demonstrated as well.

Original languageEnglish
Pages (from-to)651-654
Number of pages4
JournalJournal of Heterocyclic Chemistry
Volume24
Issue number3
DOIs
Publication statusPublished - 1987

Fingerprint

Quinolizines
Nitrogen Compounds
Hydrogen
Nuclear magnetic resonance
Infrared radiation
Derivatives
Stretching
Protons

ASJC Scopus subject areas

  • Organic Chemistry

Cite this

Nitrogen bridgehead compounds. Part 69. Studies on quinolizine derivatives. Part 3. Infrared and 1H NMR spectroscopic studies of quinolizine derivatives and their monocyclic tautomers. / Schwartz, Angéla; Pál, Zoltán; Szabó, László; Hermecz, I.; Mészáros, Zoltán.

In: Journal of Heterocyclic Chemistry, Vol. 24, No. 3, 1987, p. 651-654.

Research output: Contribution to journalArticle

@article{ef4f2c37d4dc490992a5e8539712fd65,
title = "Nitrogen bridgehead compounds. Part 69. Studies on quinolizine derivatives. Part 3. Infrared and 1H NMR spectroscopic studies of quinolizine derivatives and their monocyclic tautomers",
abstract = "Infrared and 1H nmr spectra of 4‐oxo, 1, and 4‐imino, 2, quinolizine derivatives or their monocyclic tautomers 3, 4 have been comparatively studied. The number of ethoxycarbonyl groups, the signals of the hetero proton, the C(9)‐H, and the C(6)‐CH3 group in the 1H nmr spectrum, moreover the N‐H stretching vibration bands proved to be diagnostically important for monocyclic or bicyclic as well as for 4‐oxo or 4‐imino structures. A weak intramolecular hydrogen bridge in compounds 2b and 2f, a strong chelate type hydrogen bridge in 4E and 4F=G could have been demonstrated as well.",
author = "Ang{\'e}la Schwartz and Zolt{\'a}n P{\'a}l and L{\'a}szl{\'o} Szab{\'o} and I. Hermecz and Zolt{\'a}n M{\'e}sz{\'a}ros",
year = "1987",
doi = "10.1002/jhet.5570240321",
language = "English",
volume = "24",
pages = "651--654",
journal = "Journal of Heterocyclic Chemistry",
issn = "0022-152X",
publisher = "Heterocorporation",
number = "3",

}

TY - JOUR

T1 - Nitrogen bridgehead compounds. Part 69. Studies on quinolizine derivatives. Part 3. Infrared and 1H NMR spectroscopic studies of quinolizine derivatives and their monocyclic tautomers

AU - Schwartz, Angéla

AU - Pál, Zoltán

AU - Szabó, László

AU - Hermecz, I.

AU - Mészáros, Zoltán

PY - 1987

Y1 - 1987

N2 - Infrared and 1H nmr spectra of 4‐oxo, 1, and 4‐imino, 2, quinolizine derivatives or their monocyclic tautomers 3, 4 have been comparatively studied. The number of ethoxycarbonyl groups, the signals of the hetero proton, the C(9)‐H, and the C(6)‐CH3 group in the 1H nmr spectrum, moreover the N‐H stretching vibration bands proved to be diagnostically important for monocyclic or bicyclic as well as for 4‐oxo or 4‐imino structures. A weak intramolecular hydrogen bridge in compounds 2b and 2f, a strong chelate type hydrogen bridge in 4E and 4F=G could have been demonstrated as well.

AB - Infrared and 1H nmr spectra of 4‐oxo, 1, and 4‐imino, 2, quinolizine derivatives or their monocyclic tautomers 3, 4 have been comparatively studied. The number of ethoxycarbonyl groups, the signals of the hetero proton, the C(9)‐H, and the C(6)‐CH3 group in the 1H nmr spectrum, moreover the N‐H stretching vibration bands proved to be diagnostically important for monocyclic or bicyclic as well as for 4‐oxo or 4‐imino structures. A weak intramolecular hydrogen bridge in compounds 2b and 2f, a strong chelate type hydrogen bridge in 4E and 4F=G could have been demonstrated as well.

UR - http://www.scopus.com/inward/record.url?scp=84986495413&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84986495413&partnerID=8YFLogxK

U2 - 10.1002/jhet.5570240321

DO - 10.1002/jhet.5570240321

M3 - Article

AN - SCOPUS:84986495413

VL - 24

SP - 651

EP - 654

JO - Journal of Heterocyclic Chemistry

JF - Journal of Heterocyclic Chemistry

SN - 0022-152X

IS - 3

ER -