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United States Department of Agriculture

Agricultural Research Service

Title: Assignment of 13c-Nmr Signals in Fatty Compounds with Allylic Hydroxy Groups

Authors
item Knothe, Gerhard
item Bagby, Marvin

Submitted to: Journal of the American Oil Chemists' Society
Publication Type: Peer Reviewed Journal
Publication Acceptance Date: February 2, 1996
Publication Date: N/A

Interpretive Summary: When analyzing fatty compounds by certain spectroscopic methods, scientists and technologists need to know which structural features cause the lines in the spectra they are evaluating. This is important for analyzing the quality and composition of fatty compounds used in many commodities such as biodiesel, lubricants, greases and cosmetics. The present method provides an easy method by comparing similar compounds among themselves to evaluate magnetic resonance spectra.

Technical Abstract: By comparing compounds with and without other functional groups (allylic hydroxy, carboxylic acid resp. methyl ester at Cl), 13C-NMR signals in several fatty compounds with allylic mono- and dihydroxy groups were assigned. The compounds whose signals were partially assigned are 8-hydroxy-9(E)-octadecenoic acid,11-hydroxy-9(E)- octadecenoic acid, 8,11-dihydroxy-9(E)-octadecenoic acid, 9(E)-octadecen-8-ol and 9(E)-octadecene-8,11-diol. The present evaluation can be used for assigned signals in other fatty compounds.

Last Modified: 8/30/2014
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