[C:1]([OH:20])(=[O:19])[CH2:2][CH2:3][CH2:4][CH2:5][CH2:6][CH2:7][CH2:8]/[CH:9]=[CH:10]\[CH2:11][CH2:12][CH2:13][CH2:14][CH2:15][CH2:16][CH2:17][CH3:18]>C(#N)C>[C:1]([OH:20])(=[O:19])[CH2:2][CH2:3][CH2:4][CH2:5][CH2:6][CH2:7][CH2:8]/[CH:9]=[CH:10]/[CH2:11][CH2:12][CH2:13][CH2:14][CH2:15][CH2:16][CH2:17][CH3:18]Oleic acid (5 g, 17.7 mmol) were dissolved in 20 ml dry acetonitrile and the mixture was refluxed for 24 hours. The solvent was removed under reduced pressure.
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