[C:1]([CH:4]([CH2:9][CH2:10][CH2:11][CH2:12][CH3:13])[C:5]([O:7]C)=[O:6])(=[O:3])[CH3:2].[OH-].[K+]>ClCCl>[C:1]([CH:4]([CH2:9][CH2:10][CH2:11][CH2:12][CH3:13])[C:5]([OH:7])=[O:6])(=[O:3])[CH3:2]Analogously to Example 15A, 900 mg (5.23 mmol) of methyl 2-acetylheptanoate (Example 16A) are reacted with 2.5 ml of a 3.5 M potassium hydroxide solution to give 2-acetylheptanoic acid in dichloromethane.
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