[H-].[Na+].[F:3][CH:4](P(OCC)(OCC)=O)[C:5]([O:7][CH2:8][CH3:9])=[O:6].[CH3:18][CH:19]([N:21]1[C:30]2[C:25](=[CH:26][C:27]([C:31](=O)[CH3:32])=[CH:28][CH:29]=2)[CH2:24][CH2:23][CH2:22]1)[CH3:20].[Cl-].[NH4+]>CN(C)C=O>[CH3:20][CH:19]([N:21]1[C:30]2[C:25](=[CH:26][C:27](/[C:31](/[CH3:32])=[C:4](/[F:3])\[C:5]([O:7][CH2:8][CH3:9])=[O:6])=[CH:28][CH:29]=2)[CH2:24][CH2:23][CH2:22]1)[CH3:18]450 mg (60%, 12 mmol) of sodium hydride was suspended in 10 ml of N,N-dimethylformamide. 3.3.g (14 mmol) of ethyl 2-fluoro-diethylphosphonoacetate was dropped into the suspension under cooling with ice. The obtained mixture was stirred under cooling with ice for 30 minutes, followed by the addition of 2.0 g (9.2 mmol) of 1-[1-(1-methylethyl)-1,2,3,4-tetrahydroquinolin-6-yl)ethanone. The obtained mixture was stirred under cooling with ice for one hour, followed by the addition of an aqueous solution of ammonium chloride. The obtained mixture was extracted with ethyl acetate, and the organic phase was washed with a saturated aqueous solution of common salt, dried over anhydrous magnesium sulfate and concentrated in a vacuum. The residue was purified by silica gel column chromatography to give 2.3 g of the title compound as a colorless oil.
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