Complete 1H and 13C NMR assignments of the epimeric menthane-1-carboxylic acids.
Complete NMR analyses with full assignments for (1)H and (13)C NMR spectral data for both epimers of menthane-1-carboxylic acid are described. The NMR properties of the recently synthesized axial isomer had not been previously described, and through use of a variety of 1D and 2D techniques, additional information is provided for the equatorial isomer. As well as assignments of chemical shifts, homonuclear coupling constants were determined for the equatorial isomer and most of coupling constants were measured for the axial isomer.
Dillner
Debra K
DK
Department of Chemistry, United States Naval Academy, Annapolis, MD 21402, USA. ddillner@usna.edu
Traficante
Daniel D
DD
D002247:Carbon Isotopes; D002264:Carboxylic Acids / Q000737:chemistry*; D000081005:Cyclohexane Monoterpenes; D009682:Magnetic Resonance Spectroscopy / Q000379:methods* / Q000592:standards*; D039821:Monoterpenes / Q000737:chemistry*; D011522:Protons; D012015:Reference Standards; D012680:Sensitivity and Specificity; D013237:Stereoisomerism
D002247:Carbon Isotopes; D002264:Carboxylic Acids; D000081005:Cyclohexane Monoterpenes; D039821:Monoterpenes; D011522:Protons; C519648:menthane-1-carboxylic acid