Infrared Spectra of Conjugated Amides: Reassignment of the C=0 and C=C Absorptions

Norio Nakamura, Fumiyuki Kiuchi, Yoshisuke Tsuda

Research output: Contribution to journalArticle

5 Citations (Scopus)

Abstract

Inspections of the infrared spectra of more than twenty tertiary and secondary amides and acid-induced shift experiments clarified that, in open chain amides, the carbonyl absorption shifts to lower frequency by 10—20 cm-1when a conjugation is introduced and that, among the plural absorptions at 1600—1700 cm-1in conjugated amides, the lowest absorption (usually the most intense one) should be attributable to the C = O and the higher absorptions are assignable to the C=C.

Original languageEnglish
Pages (from-to)2647-2651
Number of pages5
JournalChemical and Pharmaceutical Bulletin
Volume36
Issue number7
DOIs
Publication statusPublished - 1988 Jan 1
Externally publishedYes

Keywords

  • IR
  • acid-induced shift
  • carbonyl absorption
  • conjugated amide
  • piperamide

ASJC Scopus subject areas

  • Chemistry(all)
  • Drug Discovery

Fingerprint Dive into the research topics of 'Infrared Spectra of Conjugated Amides: Reassignment of the C=0 and C=C Absorptions'. Together they form a unique fingerprint.

  • Cite this