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C‐13 chemical shifts of the carbonyl group—VI: Transannular interactions in mesocyclic compounds
Author(s) -
Nakashima Thomas T.,
Maciel Gary E.
Publication year - 1972
Publication title -
organic magnetic resonance
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.483
H-Index - 72
eISSN - 1097-458X
pISSN - 0030-4921
DOI - 10.1002/mrc.1270040211
Subject(s) - chemical shift , carbonyl group , chemistry , group (periodic table) , ring (chemistry) , fourier transform , computational chemistry , medicinal chemistry , stereochemistry , organic chemistry , physics , quantum mechanics
Abstract The utility of C‐13 NMR in detecting transannular interactions of a carbonyl group with O, S and N in eight‐membered ring compounds has been studied. The C‐13 carbonyl chemical shifts were determined in two solvents, employing frequency‐sweep and pulse/Fourier transform techniques. The results confirm earlier conclusions based upon other physical methods and indicate that C‐13 NMR should prove useful in studies of such interactions.