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13 C NMR Study of Dihydropyrimidinedione and Dihydropyrimidine‐2‐thione Derivatives
Author(s) -
BERESNEVIČIŪTĖ K.,
BERESNEVIČIUS Z.,
MIKULSKIENĖ G.,
KIHLBERG J.,
BRODDEFALK J.
Publication year - 1997
Publication title -
magnetic resonance in chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.483
H-Index - 72
eISSN - 1097-458X
pISSN - 0749-1581
DOI - 10.1002/(sici)1097-458x(199708)35:8<553::aid-omr109>3.0.co;2-y
Subject(s) - chemistry , carbon 13 nmr , thio , nuclear magnetic resonance spectroscopy , carbon 13 nmr satellite , fluorine 19 nmr , electromagnetic shielding , computational chemistry , stereochemistry , electrical engineering , engineering
The 13 C NMR spectral data for 18 dihydropyrimidinediones and their 2‐thio analogues are presented. The influence of substituents on the shielding of neighbouring atoms was analysed and the resonances were unambiguously assigned. 13 C NMR spectroscopy was shown to be useful for structural determination of dihydropyrimidinediones and thioanalogues and allowed the facile distinction of otherwise similar compounds from the two classes. © 1997 John Wiley & Sons, Ltd.