[C:1]([O:20][CH2:21][CH3:22])(=[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].[CH2:23](O)[CH2:24][CH2:25]CC>CCOCC>[C:1]([O:20][CH2:21][CH2:22][CH2:23][CH2:24][CH3:25])(=[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]A mixture containing Catalyst A or B (0.05 g) and ethyl oleate (1.55 g, 5 mmol) and pentanol (10 ml) was refluxed with stirring for 40 h. On cooling ether (30 ml) was added and the catalyst was filtered off. The organic washings were combined and concentrated to give pentyl oleate as an oil (1.6 g, 91% yield).
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