The structure of 2‐arylamino‐2‐thiazolines, analogous thiazines and their amides—X. An IR and NMR investigation of the N‐methyl derivatives

P. Sohár, L. Toldy

Research output: Contribution to journalArticle

6 Citations (Scopus)

Abstract

The isomer‐pairs of the 2‐arylamino‐2‐thiazolines and ‐thiazines, carrying a methyl substituent on the nitrogen atom of the ring and outside the ring were synthesised by unambiguous routes. An IR and NMR investigation of these compounds revealed the fact that the NMR signal of the 2,6‐symmetrically substituted aryl group can be used advantageously for the determination of the isomeric structures. The AB2 multiplet of the aromatic protons is shifted towards the AX2 pattern in the b isomer—containing a conjugated CN bond outside the ring—as compared to the a isomers. The structure of this multiplet does not depend on the size of the hetero‐ring.

Original languageEnglish
Pages (from-to)779-781
Number of pages3
JournalOrganic Magnetic Resonance
Volume4
Issue number6
DOIs
Publication statusPublished - 1972

ASJC Scopus subject areas

  • Chemistry(all)
  • Materials Science(all)

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