1-methylpiperidin-2-one

Conditions: temp:0.00; pressure:0.00; stir:

Conditions: temp:0.00; pressure:0.00; stir:

Conditions: temp:0.00; pressure:0.00; stir:

Conditions: temp:0.00; pressure:0.00; stir:

Conditions: temp:0.00; pressure:0.00; stir:

Conditions: temp:0.00; pressure:0.00; stir:

Conditions: temp:0.00; pressure:0.00; stir:

Conditions: temp:0.00; pressure:0.00; stir:

Conditions: temp:0.00; pressure:0.00; stir:

Conditions: temp:180.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: 2-Fluoro-N-(1-methyl-2-oxo-1,2,3,4-tetrahydroquinolin-7-yl)-4-(trifluoromethyl)benzamide (250 mg), N-methylpiperidone (0.5 mL) and (2S)-2-aminopropan-1-ol (800 mg) were mixed, followed by stirring at 180° C. for 40 minutes under microwave irradiation. After spontaneous cooling and subsequent purification by silica gel column chromatography (chloroform:methanol, 99:1 to 95:5), 2-{[(1S)-2-hydroxy-1-methylethyl]amino}-N-(1-methyl-2-oxo-1,2,3,4-tetrahydroquinolin-7-yl)-4-(trifluoromethyl)benzamide (188 mg) was obtained as a solid. After spontaneous cooling subsequent purification by silica gel column chromatography (chloroform:methanol, 99:1 to 95:5)

Conditions: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: A solution of diisopropylamine (3.02 mL, 21.21 mmol) in tetrahydrofuran (44.2 mL) under argon was cooled to −78° C. and added butyllithium solution, 2.5M in hexanes (8.48 mL, 21.21 mmol). After 5 min, a solution of 1-methylpiperidin-2-one (2 g, 17.67 mmol) in tetrahydrofuran (2 mL) was added dropwise. After stirring for 10 min, a solution of phenylselenenyl chloride (4.06 g, 21.21 mmol) in 16 mL of tetrahydrofuran was added, and the reaction was stirred at −78° C. for 2 h. The reaction was quenched with aqueous saturated NH4Cl solution and diluted with CH2Cl2; the aqueous layer was back-extracted with CH2Cl2 (1×). The combined organic extracts were dried (MgSO4), filtered, and concentrated in vacuo to afford a crude crop of 1-methyl-3-(phenylselanyl)piperidin-2-one in dichloromethane. To the crude 1-methyl-3-(phenylselanyl)piperidin-2-one in dichloromethane (50 mL) at 0° C. under argon was added 3-chlorobenzoperoxoic acid (7.92 g, 35.3 mmol). The resulting mixture was allowed to gradually warm to room temperature overnight. The orange suspension was filtered, and the filtrate was concentrated in vacuo and partitioned between CH2Cl2 and aqueous saturated NaHCO3 solution; the aqueous layer was back-extracted with CH2Cl2 (5×). The combined organic extracts were dried (MgSO4), filtered, and concentrated in vacuo. Flash column chromatography (20% EtOAc/Hexanes to 100% EtOAc) afforded 1-methyl-5,6-dihydropyridin-2(1H)-one (1.33 g, 67.7% yield) as a brown oil. [M+1]=112.2. the reaction was stirred at −78° C. for 2 h The reaction was quenched with aqueous saturated NH4Cl solution diluted with CH2Cl2 the aqueous layer was back-extracted with CH2Cl2 (1×) The combined organic extracts were dried (MgSO4) filtered concentrated in vacuo

Conditions: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: To a stirred solution of N-methylpiperidone (20.0 g, 143.7 mmol) in 150 mL of ether was added dropwise methyliodide (22.4 g, 158.1 mmol) in 100 mL of ether. The exothermic reaction was controlled by the rate of addition of methyl iodide and the mixture was stirred overnight after the addition. The white solid was filtered off by suction and dried in an oven, giving 35.0 g (86.6%) of the title compound. The exothermic reaction after the addition The white solid was filtered off by suction dried in an oven