[C:1]1([C:7]2[CH:12]=[CH:11][C:10]([CH2:13][CH2:14]/[CH:15]=[CH:16]/[CH2:17][CH2:18][C:19]([O:21]CC)=[O:20])=[CH:9][CH:8]=2)[CH:6]=[CH:5][CH:4]=[CH:3][CH:2]=1>[OH-].[Na+]>[C:1]1([C:7]2[CH:12]=[CH:11][C:10]([CH2:13][CH2:14]/[CH:15]=[CH:16]/[CH2:17][CH2:18][C:19]([OH:21])=[O:20])=[CH:9][CH:8]=2)[CH:2]=[CH:3][CH:4]=[CH:5][CH:6]=1Ethyl E-7-((4-phenyl)phenyl)hept-4-enoate was saponified in methanolic sodium hydroxide at room temperature. The resulting acid, E-7-((4-phenyl)phenyl)hept-4-enoic acid, was obtained in >95% purity after chromatography. The product was fully characterized by spectral analysis infrared and nuclear magnetic spectroscopy) and combustion analysis.
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