Premium
Synthesis and NMR study of 5‐furylmethylenehydantoins and 5‐thienylmethylenehydantoins
Author(s) -
Tan SauFun,
How GeeFung,
Yeoh PheeTeik
Publication year - 1991
Publication title -
journal of physical organic chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.325
H-Index - 66
eISSN - 1099-1395
pISSN - 0894-3230
DOI - 10.1002/poc.610041106
Subject(s) - chemistry , series (stratigraphy) , aryl , nmr spectra database , computational chemistry , solvent , spectral line , proton nmr , stereochemistry , organic chemistry , paleontology , alkyl , physics , astronomy , biology
Two series of 5‐furylmethylenehydantoins and 5‐thienylmethylenehydantoins were prepared and their 1 H and 13 C NMR spectra studied in comparison with those of compounds in the analogous 5‐aryl‐ and 5‐pyridyl‐ series. Differences in the effects of the aromatic, six‐ or five‐membered heteroaromatic rings are discussed. Spectral analysis enables Z / E configurations to be assigned with confidence and conformational preferences to be qualitatively deduced. Some interesting solvent effects were also observed.