[CH3:1][O:2][C:3](=[O:10])[CH:4](Br)[CH2:5][CH2:6][CH2:7][CH3:8].[F:11][C:12]1[CH:17]=[CH:16][C:15]([SH:18])=[CH:14][C:13]=1[CH3:19].C(N(CC)CC)C>ClCCl>[CH3:1][O:2][C:3](=[O:10])[CH:4]([S:18][C:15]1[CH:16]=[CH:17][C:12]([F:11])=[C:13]([CH3:19])[CH:14]=1)[CH2:5][CH2:6][CH2:7][CH3:8]To a solution of 2-bromo-hexanoic acid methyl ester (0.500 g, 2.404 mmol) and 4-fluoro-3-methyl-benzenethiol (0.340 g, 2.404 mmol) in 20 mL of dichloromethane, was added triethylamine (3.3 mL, 12.020 mmol). After stirring at room temperature under N2 for 46 h, the reaction mixture was diluted with dichloromethane and washed with 1N HCl and brine. The organic layer dried over anhydrous Na2SO4. After removing the solvent under reduced pressure, the product was isolated by Flash chromatography (silica gel) eluting with 0-20% ethyl acetate/hexanes to give the title compound as colorless oil (0.596 g, 92% yield). LC-MS: tR=11.2 min; m/z 271 (M+H)+.
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