Triethylamine → 1-(4-Fluoro-2-methylphenyl)-2-(3-{[(4-fluorophenyl)sulfonyl]methyl}azetidin-1-yl)ethanone

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A mixture of 3-{[(4-fluorophenyl)sulfonyl]methyl}azetidine hydrochloride (75 mg, 0.28 mmol) in MeCN (5 mL) was treated with Et3N (97 μL, 0.7 mmol) and 2-bromo-1-(4-fluoro-2-methylphenyl)ethanone (72 mg, 0.31 mmol) and stirred for 30 min at room temperature. The reaction was evaporated and the residue dissolved in DCM and purified using 10 g silica bond-elute cartridge on the personal flash master. The column was eluted with 0.5% MeOH/DCM then 1% MeOH/DCM to give the title compound as a cream solid (60 mg, 56%). 1H NMR (500 MHz, CDCl3)δ2.49 (3H, s), 2.93–2.98 (1H, m), 3.08 (2H, t, J=7.4 Hz), 3.41 (2H, d, J=7.4 Hz), 3.62 (2H, t, J=7.4 Hz), 3.77 (2H, s), 6.89–6.95 (2H, m), 7.23–7.27 (2H, t, J=8.8 Hz), 7.61 (1H, dd, J=5.8 & 8.5 Hz), 7.90–7.92 (2H, dd, J=5.2 & 8.8 Hz). m/z (ES+) 380 (M+H)+.

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