The proton resonance spectra of furan and pyrrole

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DOIResolve DOI: http://doi.org/10.1139/v59-153
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TypeArticle
Journal titleCanadian Journal of Chemistry
ISSN0008-4042
Volume37
Issue6
Pages10561065
AbstractInterpretation of the fine structure of the NMR spectra of some five-membered "aromatic" heterocyclic ring compounds indicates that spin coupling constants between adjacent protons on the ring and those across the ring are approximately equal. This is in contrast to the situation in six-membered rings where coupling constants between protons ortho to one another are much larger than those in the meta position.Quadrupole effects of the N14 nucleus in pyrrole broaden the NH signal but do not interfere with the spin coupling of the NH proton with other protons. The surprising result is obtained that the spin couplings of the NH proton with α and β protons in the ring are very nearly equal in magnitude.
Publication date
LanguageEnglish
AffiliationNational Research Council Canada
Peer reviewedYes
NRC number5178
NPARC number21273739
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Record identifiera718dddd-618a-4b3b-97e6-108a7a5d88c6
Record created2015-01-20
Record modified2016-05-09
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