(4-甲基四氢-2H-吡喃-4-基)甲胺

反应条件: temp:0.00; pressure:0.00; stir:

反应条件: temp:0.00; pressure:0.00; stir:

反应条件: temp:0.00; pressure:0.00; stir:

反应条件: temp:0.00; pressure:0.00; stir:

反应条件: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

实验步骤: A mixture of tetrahydropyran-4-carbonitrile (5.00 g) and THF (50 ml) was admixed at 0° C. with lithium hexamethyldisilazide (1 M, 63 ml) and, after 90 minutes, methyl iodide (4.26 ml) was added dropwise with good cooling. After 12 hours, the reaction mixture was partitioned between water and ethyl acetate. The organic phase was dried over sodium sulfate and concentrated. The residue was dissolved in THF (200 ml), and lithium aluminum hydride (3.79 g) was added. The mixture was boiled at reflux for 6 hours. Water (3.8 ml) and then sodium hydroxide solution (40%; 3.8 ml) were cautiously added dropwise to the cooled suspension. The precipitate was filtered off and the filtrate was concentrated. This afforded the product with the molecular weight of 129.20 (C7H15NO); MS (ESI): 130 (M+H+). the reaction mixture was partitioned between water and ethyl acetate The organic phase was dried over sodium sulfate concentrated The residue was dissolved in THF (200 ml) lithium aluminum hydride (3.79 g) was added at reflux for 6 hours Water (3.8 ml) and then sodium hydroxide solution (40%; 3.8 ml) were cautiously added dropwise to the cooled suspension The precipitate was filtered off the filtrate was concentrated This afforded the product with the molecular weight of 129.20 (C7H15NO)

反应条件: temp:0.00; pressure:0.00; stir:

反应条件: temp:70.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

实验步骤: A mixture of 2,3,6-trifluoropyridine (858 mg, 6.45 mmol), (4-methyltetrahydro-2H-pyran-4-yl)methanamine (1000 mg, 7.74 mmol) and triethylamine (2.158 mL, 15.48 mmol) in NMP (16 mL) was heated at 70° C. for 1 hr. The reaction mixture was allowed to ambient temperature and was diluted with EtOAc (˜100 mL), brine (˜50 mL) and water (˜50 mL). The separated organic layer was washed with brine (1×), 0.3N aqueous HCl (2×), saturated aqueous NaHCO3 solution (1×), brine (1×), dried over Na2SO4, filtered off and concentrated in vacuo to provide crude 3,6-difluoro-N-((4-methyltetrahydro-2H-pyran-4-yl)methyl)pyridin-2-amine as a colorless oil, which was directly used in the next reaction without further purification. Yield: 1.4 g. LCMS (m/z): 243.1 [M+H]+; Retention time=0.86 min. was allowed to ambient temperature The separated organic layer was washed with brine (1×), 0.3N aqueous HCl (2×), saturated aqueous NaHCO3 solution (1×), brine (1×) dried over Na2SO4 filtered off concentrated in vacuo

反应条件: temp:110.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

实验步骤: To a solution of 2-bromo-6-fluoropyridine (619 mg, 3.52 mmol) in DMSO (3 mL) was added (4-methyltetrahydro-2H-pyran-4-yl)methanamine (500 mg, 3.87 mmol) and triethylamine (498 mg, 4.93 mmol). The mixture was heated at 110° C. for 18 hr. The mixture was allowed to cool to ambient temperature and diluted with EtOAc. The organic layer was washed with saturated aqueous NaHCO3 solution (1×), water (1×), brine (1×), dried over Na2SO4, filtered off and concentrated in vacuo. The resulting residue was purified by column chromatography [SiO2, 24 g, EtOAc/heptane= 0/100 2 min, 0/100 to 40/60 2-25 min] providing 6-bromo-N-((4-methyltetrahydro-2H-pyran-4-yl)methyl)pyridin-2-amine as a white solid. Yield: 750 mg. LCMS (m/z): 285.0/287.0 [M+H]+; Retention time=0.88 min. to cool to ambient temperature The organic layer was washed with saturated aqueous NaHCO3 solution (1×), water (1×), brine (1×) dried over Na2SO4 filtered off concentrated in vacuo The resulting residue was purified by column chromatography [SiO2, 24 g, EtOAc/heptane= 0/100 2 min, 0/100 to 40/60 2-25 min]

反应条件: temp:0.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

实验步骤: To a solution of 4-methyltetrahydro-2H-pyran-4-carbonitrile (1.8 g, 14.38 mmol) in THF (30 mL) was added carefully 1M LAH/THF (21.57 mL, 21.57 mmol) at 0° C. The reaction mixture was stirred for 15 min at 0° C., allowed to warm to ambient temperature and stirred for ˜3 hours at ambient temperature. To the reaction mixture was carefully added water (0.9 mL), 1N aqueous NaOH (2.7 mL) and water (0.9 mL) [Caution: gas development!]. The mixture was vigorously stirred for 30 min. The precipitate was filtered off and rinsed with THF. The solution was concentrated in vacuo providing crude (4-methyltetrahydro-2H-pyran-4-yl)methanamine as a yellowish solid, which was directly used in the next step without further purification. Yield: 1.54 g. LCMS (m/z): 130.1 [M+H]+; Retention time=0.21 min. to warm to ambient temperature stirred for ˜3 hours at ambient temperature The mixture was vigorously stirred for 30 min The precipitate was filtered off rinsed with THF The solution was concentrated in vacuo

反应条件: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

实验步骤: A mixture of tetrahydropyran-4-carbonitrile (5.00 g) and THF (50 ml) was admixed at 0° C. with lithium hexamethyldisilazide (1 M, 63 ml), and, after 90 minutes, methyl iodide (4.26 ml) was added dropwise with good cooling. After 12 hours, the reaction mixture was partitioned between water and ethyl acetate. The organic phase was dried over sodium sulfate and concentrated. The residue was dissolved in THF (200 ml), and lithium aluminum hydride (3.79 g) was added. The mixture was boiled at reflux for 6 hours, Water (3.8 ml) and then sodium hydroxide solution (40%; 3.8 ml) were cautiously added dropwise to the cooled suspension. The precipitate was filtered off and the filtrate was concentrated. This afforded the product with the molecular weight of 129.20 (C7H15NO); MS (ESI): 130 (M+H+). After 12 hours the reaction mixture was partitioned between water and ethyl acetate The organic phase was dried over sodium sulfate concentrated The residue was dissolved in THF (200 ml) lithium aluminum hydride (3.79 g) was added at reflux for 6 hours Water (3.8 ml) and then sodium hydroxide solution (40%; 3.8 ml) were cautiously added dropwise to the cooled suspension The precipitate was filtered off the filtrate was concentrated This afforded the product with the molecular weight of 129.20 (C7H15NO)

反应条件: temp:70.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

实验步骤: A mixture of 2,3,6-trifluoropyridine (858 mg, 6.45 mmol), (4-methyltetrahydro-2H-pyran-4-yl)methanamine (1000 mg, 7.74 mmol) and triethylamine (2.158 mL, 15.48 mmol) in NMP (16 mL) was heated at 70° C. for 1 hr. The reaction mixture was allowed to ambient temperature and was diluted with EtOAc (˜100 mL), brine (˜50 mL) and water (˜50 mL). The separated organic layer was washed with brine (1×), 0.3N aqueous HCl (2×), saturated aqueous NaHCO3 solution (1×), brine (1×), dried over Na2SO4, filtered off and concentrated in vacuo to provide crude 3,6-difluoro-N-((4-methyltetrahydro-2H-pyran-4-yl)methyl)pyridin-2-amine as a colorless oil, which was directly used in the next reaction without further purification. Yield: 1.4 g. LCMS (m/z): 243.1 [M+H]+; Retention time=0.86 min. was allowed to ambient temperature The separated organic layer was washed with brine (1×), 0.3N aqueous HCl (2×), saturated aqueous NaHCO3 solution (1×), brine (1×) dried over Na2SO4 filtered off concentrated in vacuo

反应条件: temp:110.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

实验步骤: To a solution of 2-bromo-6-fluoropyridine (619 mg, 3.52 mmol) in DMSO (3 mL) was added (4-methyltetrahydro-2H-pyran-4-yl)methanamine (500 mg, 3.87 mmol) and triethylamine (498 mg, 4.93 mmol). The mixture was heated at 110° C. for 18 hr. The mixture was allowed to cool to ambient temperature and diluted with EtOAc. The organic layer was washed with saturated aqueous NaHCO3 solution (1×), water (1×), brine (1×), dried over Na2SO4, filtered off and concentrated in vacuo. The resulting residue was purified by column chromatography [SiO2, 24 g, EtOAc/heptane=0/100 2 min, 0/100 to 40/60 2-25 min] providing 6-bromo-N-((4-methyltetrahydro-2H-pyran-4-yl)methyl)pyridin-2-amine as a white solid. Yield: 750 mg. LCMS (m/z): 285.0/287.0 [M+H]+; Retention time=0.88 min. to cool to ambient temperature The organic layer was washed with saturated aqueous NaHCO3 solution (1×), water (1×), brine (1×) dried over Na2SO4 filtered off concentrated in vacuo The resulting residue was purified by column chromatography [SiO2, 24 g, EtOAc/heptane=0/100 2 min, 0/100 to 40/60 2-25 min]