1-oxa-3-azaspiro[4.5]decan-2-one

反応条件: temp:0.00; pressure:0.00; stir:

反応条件: temp:0.00; pressure:0.00; stir:

反応条件: temp:70.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

実験手順: Methanesulfonic acid 5-bromo-pyridin-2-ylmethyl ester (85 mg, 0.319 mmol), cesium carbonate (312 mg, 0.957 mmol) and 1-oxa-3-aza-spiro[4.5]decan-2-one (49.5 mg, 0.319 mmol) were mixed in acetonitrile (2 mL). The reaction mixture was heated at 70° C. for 5 hours and then diluted with dichloromethane (8 mL). The mixture was washed with water (3 mL) and brine (3 mL). The combined organic phase was dried over sodium sulfate and concentrated. The residue was purified on silica gel eluting with 10 to 20% ethyl acetate in hexanes to give the product as an off-white solid (60 mg, 58%). 1H NMR (300 MHz, CDCl3): δ 8.6 (d, 1H), 7.81 (dd, 1H), 7.23 (d, 1H), 4.49 (s, 2H), 3.27 (s, 2H), 1.79 (m, 4H), 1.47 (m, 6H). The mixture was washed with water (3 mL) and brine (3 mL) The combined organic phase was dried over sodium sulfate concentrated The residue was purified on silica gel eluting with 10 to 20% ethyl acetate in hexanes

反応条件: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

実験手順: 1-Aminomethyl-cyclohexanol hydrogen chloride (250 mg, 1.5 mmol) and triethylamine (0.21 mL, 1.5 mmol) were mixed in dichloromethane (5 mL), and the mixture was stirred for 15 min. Carbonic acid dipyridin-2-yl ester (326 mg, 1.5 mmol) was then added, and the reaction mixture was stirred at room temperature overnight. The reaction mixture was diluted with ethyl acetate (10 mL), washed with water (2×4 mL), brine (2×4 mL); dried over anhydrous sodium sulfate and concentrated to give the title compound as a white powder (174 mg, 74%). 1H NMR (300 MHz, CDCl3): δ 6.42 (br, 1H), 3.31 (s, 2H), 1.86 (m, 2H), 1.76 (m, 2H), 1.65 (m, 2H), 1.47 (m, 4H). the reaction mixture was stirred at room temperature overnight washed with water (2×4 mL), brine (2×4 mL) dried over anhydrous sodium sulfate concentrated

反応条件: temp:70.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

実験手順: Methanesulfonic acid 5-bromo-pyridin-2-ylmethyl ester (85 mg, 0.319 mmol), cesium carbonate (312 mg, 0.957 mmol) and 1-oxa-3-aza-spiro[4.5]decan-2-one (49.5 mg, 0.319 mmol) were mixed in acetonitrile (2 mL). The reaction mixture was heated at 70° C. for 5 hours and then diluted with dichloromethane (8 mL). The mixture was washed with water (3 mL) and brine (3 mL). The combined organic phase was dried over sodium sulfate and concentrated. The residue was purified on silica gel eluting with 10 to 20% ethyl acetate in hexanes to give the product as an off-white solid (60 mg, 58%). 1H NMR (300 MHz, CDCl3): δ 8.6 (d, 1H), 7.81 (dd, 1H), 7.23 (d, 1H), 4.49 (s, 2H), 3.27 (s, 2H), 1.79 (m, 4H), 1.47 (m, 6H). The mixture was washed with water (3 mL) and brine (3 mL) The combined organic phase was dried over sodium sulfate concentrated The residue was purified on silica gel eluting with 10 to 20% ethyl acetate in hexanes

反応条件: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

実験手順: 1-Aminomethyl-cyclohexanol hydrogen chloride (250 mg, 1.5 mmol) and triethylamine (0.21 mL, 1.5 mmol) were mixed in dichloromethane (5 mL), and the mixture was stirred for 15 min. Carbonic acid dipyridin-2-yl ester (326 mg, 1.5 mmol) was then added, and the reaction mixture was stirred at room temperature overnight. The reaction mixture was diluted with ethyl acetate (10 mL), washed with water (2×4 mL), brine (2×4 mL); dried over anhydrous sodium sulfate and concentrated to give the title compound as a white powder (174 mg, 74%). 1H NMR (300 MHz, CDCl3): δ 6.42 (br, 1H), 3.31 (s, 2H), 1.86 (m, 2H), 1.76 (m, 2H), 1.65 (m, 2H), 1.47 (m, 4H). the reaction mixture was stirred at room temperature overnight washed with water (2×4 mL), brine (2×4 mL) dried over anhydrous sodium sulfate concentrated

反応条件: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

実験手順: 0.65 g (5.0 mmol) of 1-(aminomethyl)-cyclohexanol, 1.2 g (5.5 mmol) di-tert.-butyldicarbonate ((Boc)2O) and 0.611 g 4-dimethylaminopyridine were dissolved in 50 ml acetonitrile and agitated overnight at room temperature. The mixture was then fully turned over, the residue was dissolved in 20 ml acetic acid and again turned over. The residue was taken up in 25 ml 1 M hydrochloric acid and extracted with 50 ml toluene. extracted with 50 ml toluene