(S)-2-甲基-4-氧代哌啶-1-羧酸叔丁酯

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

实验步骤: In a argon flushed dry 25 ml 2-neckoundbottomflask (S)-2-methyl-4-oxo-piperidine-1-carboxylic acid tert-butyl ester (34) (0.6 g, 2.81 mmol) was dissolved in 10 ml of ether. A 1M solution of allylmagnesiumbromide in Et2O (3.66 ml, 3.66 mmol) was added dropwise at 0° C. The reaction mixture was stirred at 0° C. for 2 h. The mixture was quenched with NH4Cl solution and extracted with ether. The organic layer was washed with brine, dried over Na2 SO4 and evaporated. The crude product was purified by flash chromatography (silica gel, 20-30% EtOAc/cyclohexane) which furnished the product as white solid In a argon flushed The mixture was quenched with NH4Cl solution extracted with ether The organic layer was washed with brine dried over Na2 SO4 evaporated The crude product was purified by flash chromatography (silica gel, 20-30% EtOAc/cyclohexane) which

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

实验步骤: In a argon flushed dry 25 ml 2-neckoundbottomflask (S)-2-methyl-4-oxo-piperidine-1-carboxylic acid tert-butyl ester (34) (0.6 g, 2.81 mmol) was dissolved in 10 ml of ether. A 1M solution of allylmagnesiumbromide in Et2O (3.66 ml, 3.66 mmol) was added dropwise at 0° C. The reaction mixture was stirred at 0° C. for 2 h. The mixture was quenched with NH4Cl solution and extracted with ether. The organic layer was washed with brine, dried over Na2 SO4 and evaporated. The crude product was purified by flash chromatography (silica gel, 20-30% EtOAc/cyclohexane) which furnished the product as white solid In a argon flushed The mixture was quenched with NH4Cl solution extracted with ether The organic layer was washed with brine dried over Na2 SO4 evaporated The crude product was purified by flash chromatography (silica gel, 20-30% EtOAc/cyclohexane) which

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

实验步骤: In a argon flushed dry 25 ml 2-neckoundbottomflask (S)-2-methyl-4-oxo-piperidine-1-carboxylic acid tert-butyl ester (34) (0.6 g, 2.81 mmol) was dissolved in 10 ml of ether. A 1M solution of allylmagnesiumbromide in Et2O (3.66 ml, 3.66 mmol) was added dropwise at 0° C. The reaction mixture was stirred at 0° C. for 2 h. The mixture was quenched with NH4Cl solution and extracted with ether. The organic layer was washed with brine, dried over Na2 SO4 and evaporated. The crude product was purified by flash chromatography (silica gel, 20-30% EtOAc/cyclohexane) which furnished the product as white solid In a argon flushed The mixture was quenched with NH4Cl solution extracted with ether The organic layer was washed with brine dried over Na2 SO4 evaporated The crude product was purified by flash chromatography (silica gel, 20-30% EtOAc/cyclohexane) which

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

实验步骤: To a solution of (S)-tert-butyl 2-methyl-4-oxopiperidine-1-carboxylate (2.76 g, 12.9 mmol) in toluene (100 mL) at 100° C. was added 2-azido-5-fluoropyrimidine (2.34 g, 16.8 mmol) as a solution in toluene (15 mL) followed by pyrrolidine (1.06 mL, 12.9 mmol). After stirring for 3 h at rt, the reaction was cooled to 0° C. and CH2Cl2 (100 mL) was added followed by NaHCO3 (2.17 g, 25.9 mmol) and mCPBA (4.47 g, 25.9 mmol). The reaction was allowed to warm to rt over 30 min followed by the addition of 1N NaOH (100 mL). The organic layer was separated and the water layer was extracted with CH2Cl2 two times. The combined organic layers were dried over anhydrous MgSO4, filtered and concentrated. Chromatography on silica gel (0-100% ethyl acetatehexanes) provided the desired product as a 9:1 mixture of regioisomers (9:1=(S)-tert-butyl 1-(5-fluoropyrimidin-2-yl)-6-methyl-6,7-dihydro-1H-[1,2,3]triazolo[4,5-c]pyridine-5(4H)-carboxylate: (S)-tert-butyl 1-(5-fluoropyrimidin-2-yl)-4-methyl-6,7-dihydro-1H-[1,2,3]triazolo[4,5-c]pyridine-5(4H)-carboxylate (2.85 g, 66%). The minor regioisomer was separated by SFC (Chiralpak IC 5 μm 250*21 mm, mobile phase 70% CO2, 30% iPrOH) to provide the product as a white solid. MS (ESI) mass calcd. C15H19FN6O2, 334.16. m/z found, 335.2 [M+H]+. 1H NMR (500 MHz, CDCl3) δ 8.73 (s, 2H), 5.16 (d, J=16.1 Hz, 1H), 4.96 (br s, 1H), 4.25 (d, J=16.4 Hz, 1H), 3.38-3.28 (m, 1H), 3.19-3.10 (m, 1H), 1.50 (s, 9H), 1.16 (d, J=7.0 Hz, 3H). the reaction was cooled to 0° C. to warm to rt over 30 min The organic layer was separated the water layer was extracted with CH2Cl2 two times The combined organic layers were dried over anhydrous MgSO4 filtered concentrated

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

实验步骤: Dissolve N-(3-amino-phenyl)-2-chloro-4-fluoro-benzamide (Preparation 1, 200 mg, 0.756 mmol) and (2S)-2-methyl-4-oxo-piperidine-1-carboxylic acid tert-butyl ester (161 mg, 0.756 mmol) in tetrahydrofuran (5 mL). Add acetic acid (52 μL, 0.907 mmol) and sodium triacetoxyborohydride (192 mg, 0.907 mmol) and stir at room temperature for 18 hr. Heat the reaction to 45° C. for 4 hr. Cool the reaction to room temperature and load onto an SCX column with methanol. Wash the column with methanol, flush with 2M ammonia in methanol, and concentrate in vacuo. Purify by column chromatography (20%-75% ethyl acetate/hexane) to yield 161 mg (46%) of the title compound. Mass spectrum (ion spray): m/z 462.4 (M+1); 1H NMR: δ (CDCl3, ppm) 7.76 (m, 2H), 7.20 (m, 1H), 7.15 (m, 1H), 7.10 (m, 1H), 6.70 (d, J=7.6 Hz, 1H), 6.40 (d, J=8.4 Hz, 1H), 4.20 (m, 1H), 3.82 (m, 2H), 3.67 (bs, 1H), 3.20 (m, 1H), 2.00 (m, 2H), 1.65 (m, 2H), 1.47 (s, 9H), 1.27, (m, 4H). Heat the reaction to 45° C. for 4 hr Cool the reaction to room temperature Wash the column with methanol flush with 2M ammonia in methanol concentrate in vacuo Purify by column chromatography (20%-75% ethyl acetate/hexane)

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

实验步骤: Dissolve N-(3-amino-phenyl)-2-chloro-4-fluoro-benzamide (Preparation 1, 200 mg, 0.756 mmol) and (2S)-2-methyl-4-oxo-piperidine-1-carboxylic acid tert-butyl ester (161 mg, 0.756 mmol) in tetrahydrofuran (5 mL). Add acetic acid (52 μL, 0.907 mmol) and sodium triacetoxyborohydride (192 mg, 0.907 mmol) and stir at room temperature for 18 hr. Heat the reaction to 45° C. for 4 hr. Cool the reaction to room temperature and load onto an SCX column with methanol. Wash the column with methanol, flush with 2M ammonia in methanol, and concentrate in vacuo. Purify by column chromatography (20%–75% ethyl acetate/hexane) to yield 161 mg (46%) of the title compound. Mass spectrum (ion spray): m/z 462.4 (M+1); 1H NMR: δ (CDCl3, ppm) 7.76 (m, 2H), 7.20 (m, 1H), 7.15 (m, 1H), 7.10 (m, 1H), 6.70 (d, J=7.6 Hz, 1H), 6.40 (d, J=8.4 Hz, 1H), 4.20 (m, 1H), 3.82 (m, 2H), 3.67 (bs, 1H), 3.20 (m, 1H), 2.00 (m, 2H), 1.65 (m, 2H), 1.47 (s, 9H), 1.27, (m, 4H). Heat the reaction to 45° C. for 4 hr Cool the reaction to room temperature Wash the column with methanol flush with 2M ammonia in methanol concentrate in vacuo Purify by column chromatography (20%–75% ethyl acetate/hexane)

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

实验步骤: In a argon flushed dry 25 ml 2-neckoundbottomflask (S)-2-methyl-4-oxo-piperidine-1-carboxylic acid tert-butyl ester (34) (0.6 g, 2.81 mmol) was dissolved in 10 ml of ether. A 1M solution of allylmagnesiumbromide in Et2O (3.66 ml, 3.66 mmol) was added dropwise at 0° C. The reaction mixture was stirred at 0° C. for 2 h. The mixture was quenched with NH4Cl solution and extracted with ether. The organic layer was washed with brine, dried over Na2 SO4 and evaporated. The crude product was purified by flash chromatography (silica gel, 20-30% EtOAc/cyclohexane) which furnished the product as white solid In a argon flushed The mixture was quenched with NH4Cl solution extracted with ether The organic layer was washed with brine dried over Na2 SO4 evaporated The crude product was purified by flash chromatography (silica gel, 20-30% EtOAc/cyclohexane) which