达泊西汀杂质43

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: 6-(Carbomethoxyethyl)-3-methyl-8,9-dichlorobenzimidazo-[2,1-b]quinazolin-12(6H)one is prepared with 3-methyl-8,9-dichlorobenzimidazo[2,1-b]quinazolin-12(6H)one and methyl 3-chloropropionate.

反应条件: temp:60.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

实验步骤: To a stirred solution of 2-fluoro-5-((5-(6-methylpyridin-2-yl)-4-(quinolin-6-yl)-1H-imidazol-2-yl)methyl)phenol (Example 81) (100 mg, 0.244 mmol) in acetone (5 mL) were added methyl 3-chloropropanoate (32 uL, 0.366 mmol) and K2CO3 (67 mg, 0.488 mmol) and the mixture was stirred at 60° C. for 20 hours. The reaction mixture was cooled to room temperature, diluted with H2O (20 mL), and extracted with CH2Cl2 (5 mL, 3 times). The organic layer was dried over Na2SO4, filtered, and evaporated under reduced pressure. The residue was purified by MPLC on NH silica gel (MeOH:CH2Cl2=1:50 (v/v)) to afford the title compound (88.4 mg, 75%). (300 MHz, CDCl3) δ 2.50 (3H, s), 3.74 (3H, s), 4.16 (2H, s), 4.71 (2H, s), 6.91-6.97 (3H, m), 7.06 (1H, td), 7.24 (1H, s), 7.37 (1H, d), 7.42 (1H, dd), 7.97 (1H, d), 8.10-8.18 (3H, m), 8.92 (1H, dd), 10.35 (1H, bs). MS (ESI) m/z 483 (MH+). The reaction mixture was cooled to room temperature extracted with CH2Cl2 (5 mL, 3 times) The organic layer was dried over Na2SO4 filtered evaporated under reduced pressure The residue was purified by MPLC on NH silica gel (MeOH:CH2Cl2=1:50 (v/v))

反应条件: temp:50.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

实验步骤: To a mixture of 4-iodopyrazole (1.000 g, 5.155 mmol), Cs2CO3 (2.016 g, 6.186 mmol), and DMF (20 mL, 0.2 mol) was added methyl 3-chloropropanoate (758.1 mg, 6.186 mmol) at 0° C. The reaction was heated to 50° C. for 1 h. The material was transferred to a separatory funnel, diluted with EtOAc, and washed with water several times to remove DMF. The organic layer was dry-loaded onto silica gel, and column chromatography was used for purification, eluting with 3:1 Hexanes/EtOAc, affording the title compound as a clear liquid. MS (ES+): m/z=280.95 (100) [MH+]. HPLC: tR=2.91 min (ZQ3, polar—5 min). The material was transferred to a separatory funnel washed with water several times to remove DMF was used for purification eluting with 3:1 Hexanes/EtOAc