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13 C NMR studies of some hydroxycoumarins and related compounds
Author(s) -
Sankar S. S.,
Gilbert R. D.,
Fornes R. E.
Publication year - 1982
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.1270190413
Subject(s) - chemical shift , coupling constant , chemistry , ring (chemistry) , hydrogen bond , carbon 13 nmr , computational chemistry , group (periodic table) , stereochemistry , organic chemistry , molecule , physics , particle physics
The 13 C chemical shifts and one‐bond carbon‐hydrogen coupling constants have been obtained for some hydroxycoumarins and their corresponding acetoxy and methoxy derivatives. The changes in the one‐bond carbon‐hydrogen coupling constants resulting from the conversion of a hydroxy group to an acetoxy group represent a simple method of assignment of the 13 C NMR signals in coumarins which contain one or more hydroxy groups in the benzenoid ring.