Sodium Carbonate → 4-Chloro-10-azatricyclo[6.3.1.02,7]dodeca-2(7),3,5-triene hydrochloride

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1-(4-Chloro-10-aza-tricyclo[6.3.1.02,7]dodeca-2(7),3,5-trien-10-yl)-2,2,2-trifluoro-ethanone (470 mg, 1.62 mmol) and Na2CO3 (344 mg, 3.24 mmol) in methanol (30 mL) and H2O (10 mL) were heated to reflux. After 2 hours, the reaction was cooled and diluted with water then extracted with ethyl acetate (4×40 mL), dried (Na2SO4), filtered and concentrated to a yellow oil. The crude material was treated with excess 3N HCl ethyl acetate and concentrated, then dissolved in a minimum of CH2Cl2 and the solution was saturated with hexanes and stirred. After stirring 4 hours the product was collected by filtration (155 mg, 42%). 1H NMR (free base) (400 MHz, CDCl3) δ 7.15 (m, 2H), 7.09 (d, J=8.0 Hz, 1H), 3.00–2.94 (m, 4H), 2.68, (m, 2H), 2.38 (m, 1H), 1.92 (d, J=10.5 Hz, 1H). 1H NMR (HCl salt) (400 MHz, DMSO-d6) δ 7.30–7.20 (m, 3H), 3.30–3.15 (m, 6H), 2.37 (m, 1H), 1.89 (d, J=11.0 Hz, 1H). APCI MS m/e 194.1 [(M+1)+].

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