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13 C NMR of coumarins I: 3‐(1,1‐Dimethylallyl) derivatives
Author(s) -
Macís F. A.,
Massanet G. M.,
RodriguezLuis F.,
Salvá J.
Publication year - 1989
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/mrc.1260270721
Subject(s) - chemistry , carbon 13 nmr , stereochemistry , coumarin , alkylation , organic chemistry , catalysis
The 13 C NMR data of nine 3‐(1,1‐dimethylallyl)coumarins are reported and compared with those of the corresponding C‐3 unsubstituted compounds. A spectro‐scopic criterion for distinguishing C‐3 alkylated dihydrofurano‐ from dihydro‐pyrano‐coumarins is proposed.