ethyl 2-(4-bromo-2-chlorophenyl)acetate

反応条件: temp:100.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

実験手順: To a solution of 4-ethylamino-2-(methylthio)pyrimidine-5-carbaldehyde (9, 1.00 g, 5.07 mmol) in anhydrous dimethylacetamide (10 mL) was added ethyl 4-bromo-2-chlorophenylacetate (1.70 g, 6.12 mmol) and cesium carbonate (3.30 g, 10.13 mmol). The reaction mixture was stirred at 100° C. for 2 h. The mixture was poured into ice water and the orange solid was collected, washed with water, dried and purified by Teledyne-Isco using a hexane:ethyl acetate gradient (1:0→4:1) to afford the title compound as a white solid (0.30 g, 0.73 mmol, 14%). ESMS m/z 410 (M+H)+; 1H NMR (400 MHz, CDCl3) δ ppm 8.65 (s, 1H), 7.66 (d, J=1.5 Hz, 1H), 7.63 (s, 1H), 7.47 (dd, J=8.3, 1.5 Hz, 1H), 7.26 (d, J=8.3 Hz, 1H), 4.55 (q, J=7.0 Hz, 2H), 2.66 (s, 3H), 1.37 (t, J=7.0 Hz, 3H). the orange solid was collected washed with water dried purified by Teledyne-Isco

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

実験手順: (4-Bromo-2-chlorophenyl)-acetic acid (18, 44.03 g, 0.18 mol) was dissolved in ethanol (440 mL) and thionyl chloride (44.0 mL, 0.61 mol) was added dropwise. The mixture was refluxed for 1 h, and evaporated. The residue was taken up in toluene and evaporated (2×100 mL). The crude oily product was dissolved in dichloromethane (300 mL) and washed with water (2×100 mL), dried over sodium sulfate, filtered and evaporated. The residue was dried in high vacuum (0.2 mmHg) at room temperature, solidifying to a light yellow low melting crystalline solid (45.5 g, 0.16 mol, 93%) ESMS m/z 294 [M+H+NH3]+; 1H NMR (300 MHz, CDCl3): δ 7.55 (d, J=2 Hz, 1H), 7.37 (dd, J=8, 2 Hz, 1H), 7.16 (d, J=8 Hz, 1H), 4.18 (q, J=7 Hz, 2H), 3.71 (s, 2H), 1.26 (t, J=7 Hz, 3H). The mixture was refluxed for 1 h evaporated evaporated (2×100 mL) The crude oily product was dissolved in dichloromethane (300 mL) washed with water (2×100 mL) dried over sodium sulfate filtered evaporated The residue was dried in high vacuum (0.2 mmHg) at room temperature

反応条件: temp:100.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

実験手順: To a solution of 4-ethylamino-2-(methylthio)pyrimidine-5-carbaldehyde (9, 1.00 g, 5.07 mmol) in anhydrous dimethylacetamide (10 mL) was added ethyl 4-bromo-2-chlorophenylacetate (1.70 g, 6.12 mmol) and cesium carbonate (3.30 g, 10.13 mmol). The reaction mixture was stirred at 100° C. for 2 h. The mixture was poured into ice water and the orange solid was collected, washed with water, dried and purified by Teledyne-Isco using a hexane:ethyl acetate gradient (1:0→4:1) to afford the title compound as a white solid (0.30 g, 0.73 mmol, 14%). ESMS m/z 410 (M+H)+; 1H NMR (400 MHz, CDCl3) δ ppm 8.65 (s, 1H), 7.66 (d, J=1.5 Hz, 1H), 7.63 (s, 1H), 7.47 (dd, J=8.3, 1.5 Hz, 1H), 7.26 (d, J=8.3 Hz, 1H), 4.55 (q, J=7.0 Hz, 2H), 2.66 (s, 3H), 1.37 (t, J=7.0 Hz, 3H). the orange solid was collected washed with water dried purified by Teledyne-Isco

反応条件: temp:100.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

実験手順: To a solution of 4-ethylamino-2-(methylthio)pyrimidine-5-carbaldehyde (9, 1.00 g, 5.07 mmol) in anhydrous dimethylacetamide (10 mL) was added ethyl 4-bromo-2-chlorophenylacetate (1.70 g, 6.12 mmol) and cesium carbonate (3.30 g, 10.13 mmol). The reaction mixture was stirred at 100° C. for 2 h. The mixture was poured into ice water and the orange solid was collected, washed with water, dried and purified by Teledyne-Isco using a hexane:ethyl acetate gradient (1:0→4:1) to afford the title compound as a white solid (0.30 g, 0.73 mmol, 14%). ESMS m/z 410 (M+H)+; 1H NMR (400 MHz, CDCl3) δ ppm 8.65 (s, 1H), 7.66 (d, J=1.5 Hz, 1H), 7.63 (s, 1H), 7.47 (dd, J=8.3, 1.5 Hz, 1H), 7.26 (d, J=8.3 Hz, 1H), 4.55 (q, J=7.0 Hz, 2H), 2.66 (s, 3H), 1.37 (t, J=7.0 Hz, 3H). the orange solid was collected washed with water dried purified by Teledyne-Isco

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

実験手順: (4-Bromo-2-chlorophenyl)-acetic acid (18, 44.03 g, 0.18 mol) was dissolved in ethanol (440 mL) and thionyl chloride (44.0 mL, 0.61 mol) was added dropwise. The mixture was refluxed for 1 h, and evaporated. The residue was taken up in toluene and evaporated (2×100 mL). The crude oily product was dissolved in dichloromethane (300 mL) and washed with water (2×100 mL), dried over sodium sulfate, filtered and evaporated. The residue was dried in high vacuum (0.2 mmHg) at room temperature, solidifying to a light yellow low melting crystalline solid (45.5 g, 0.16 mol, 93%) ESMS m/z 294 [M+H+NH3]+; 1H NMR (300 MHz, CDCl3): δ 7.55 (d, J=2 Hz, 1H), 7.37 (dd, J=8, 2 Hz, 1H), 7.16 (d, J=8 Hz, 1H), 4.18 (q, J=7 Hz, 2H), 3.71 (s, 2H), 1.26 (t, J=7 Hz, 3H). The mixture was refluxed for 1 h evaporated evaporated (2×100 mL) The crude oily product was dissolved in dichloromethane (300 mL) washed with water (2×100 mL) dried over sodium sulfate filtered evaporated The residue was dried in high vacuum (0.2 mmHg) at room temperature

反応条件: temp:100.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

実験手順: To a solution of 4-ethylamino-2-(methylthio)pyrimidine-5-carbaldehyde (9, 1.00 g, 5.07 mmol) in anhydrous dimethylacetamide (10 mL) was added ethyl 4-bromo-2-chlorophenylacetate (1.70 g, 6.12 mmol) and cesium carbonate (3.30 g, 10.13 mmol). The reaction mixture was stirred at 100° C. for 2 h. The mixture was poured into ice water and the orange solid was collected, washed with water, dried and purified by Teledyne-Isco using a hexane:ethyl acetate gradient (1:0→4:1) to afford the title compound as a white solid (0.30 g, 0.73 mmol, 14%). ESMS m/z 410 (M+H)+; 1H NMR (400 MHz, CDCl3) δ ppm 8.65 (s, 1H), 7.66 (d, J=1.5 Hz, 1H), 7.63 (s, 1H), 7.47 (dd, J=8.3, 1.5 Hz, 1H), 7.26 (d, J=8.3 Hz, 1H), 4.55 (q, J=7.0 Hz, 2H), 2.66 (s, 3H), 1.37 (t, J=7.0 Hz, 3H). the orange solid was collected washed with water dried purified by Teledyne-Isco

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

実験手順: (4-Bromo-2-chlorophenyl)-acetic acid (18, 44.03 g, 0.18 mol) was dissolved in ethanol (440 mL) and thionyl chloride (44.0 mL, 0.61 mol) was added dropwise. The mixture was refluxed for 1 h, and evaporated. The residue was taken up in toluene and evaporated (2×100 mL). The crude oily product was dissolved in dichloromethane (300 mL) and washed with water (2×100 mL), dried over sodium sulfate, filtered and evaporated. The residue was dried in high vacuum (0.2 mmHg) at room temperature, solidifying to a light yellow low melting crystalline solid (45.5 g, 0.16 mol, 93%) ESMS m/z 294 [M+H+NH3]+; 1H NMR (300 MHz, CDCl3): δ 7.55 (d, J=2 Hz, 1H), 7.37 (dd, J=8, 2 Hz, 1H), 7.16 (d, J=8 Hz, 1H), 4.18 (q, J=7 Hz, 2H), 3.71 (s, 2H), 1.26 (t, J=7 Hz, 3H). The mixture was refluxed for 1 h evaporated evaporated (2×100 mL) The crude oily product was dissolved in dichloromethane (300 mL) washed with water (2×100 mL) dried over sodium sulfate filtered evaporated The residue was dried in high vacuum (0.2 mmHg) at room temperature