C([O:3][C:4]([CH:6]1[CH2:8][CH:7]1[C:9]1[CH:14]=[CH:13][C:12]([F:15])=[CH:11][CH:10]=1)=[O:5])C.O.[Li].CO.Cl>O>[F:15][C:12]1[CH:11]=[CH:10][C:9]([CH:7]2[CH2:8][CH:6]2[C:4]([OH:5])=[O:3])=[CH:14][CH:13]=1In a round flask was charged with 2-(4-fluoro-phenyl)-cyclopropanecarboxylic acid ethyl ester (1700 mg, 8.16 mmol), lithium monohydrate (1370 mg, 32.7 mmol), methanol (25 mL) and water (10 mL). The mixture was heated at 80° C. for 2 hours. The reaction mixture was rotavaped. The residue was neutralized with 4N hydrochloric acid and extracted with dichloromethane. The dichloromethane layer was washed with brine, dried over sodium sulfate and evaporated to give 1.61 grams of white solid as desired product. LC-MS m/e 179 (MH−).
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