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13C NMR studies of some hydroxycoumarins and related compounds

✍ Scribed by S. S. Sankar; R. D. Gilbert; R. E. Fornes

Publisher
John Wiley and Sons
Year
1982
Tongue
English
Weight
252 KB
Volume
19
Category
Article
ISSN
0749-1581

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✦ Synopsis

Abstract

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.

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