1-bromo-2-(methoxymethoxy)ethane

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

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

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

Procedure: Sodium hydride (60% in mineral oil, 0.08 g, 2.0 mmol) is suspended in DMF (5 ml), and thereto is added 2-phenoxy-3-[3-(3-hydroxypyridin-4-yl)propoxy]pyridine (0.20 g, 0.62 mmol) obtained in Example 30 at room temperature, and the mixture is stirred for 30 minutes. To the mixture is added 2-methoxymethoxyethyl bromide (0.32 g, 2.0 mmol) under ice-cooling, and the mixture is stirred at 50° C. for 30 minutes. To the reaction solution is added chloroform (100 ml), and the mixture is washed with a saturated brine (50 ml×2), dried over anhydrous magnesium sulfate, and concentrated under reduced pressure. To the residue are added ethanol (20 ml) and a 35% aqueous hydrochloric acid solution (2 ml), and the mixture is stirred at 60° C. for 30 minutes. The pH value of the reaction solution is adjusted to pH 10 with a saturated aqueous sodium hydrogen carbonate solution, and the mixture is extracted with chloroform (50 ml×2), washed with a saturated brine (50 ml×2), dried over anhydrous magnesium sulfate, and concentrated under reduced pressure. The residue is purified by silica gel column chromatography (eluent: chloroform/methanol) to give 2-phenoxy-3-[3-(3-(2-hydroxyethoxy)pyridin-4-yl)propoxy)pyridine, which is further treated with fumaric acid to give the title compound (0.17 g), m.p. 129-132° C. (recrystallized from ethanol/isopropyl ether). cooling the mixture is stirred at 50° C. for 30 minutes the mixture is washed with a saturated brine (50 ml×2) dried over anhydrous magnesium sulfate concentrated under reduced pressure To the residue are added ethanol (20 ml) a 35% aqueous hydrochloric acid solution (2 ml), and the mixture is stirred at 60° C. for 30 minutes the mixture is extracted with chloroform (50 ml×2) washed with a saturated brine (50 ml×2) dried over anhydrous magnesium sulfate concentrated under reduced pressure The residue is purified by silica gel column chromatography (eluent: chloroform/methanol)

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

Procedure: Sodium hydride (60% in mineral oil, 0.08 g, 2.0 mmol) is suspended in DMF (5 ml), and thereto is added 2-phenoxy-3-[3-(3-hydroxypyridin-4-yl)propoxy]pyridine (0.20 g, 0.62 mmol) obtained in Example 30 at room temperature, and the mixture is stirred for 30 minutes. To the mixture is added 2-methoxymethoxyethyl bromide (0.32 g, 2.0 mmol) under ice-cooling, and the mixture is stirred at 50° C. for 30 minutes. To the reaction solution is added chloroform (100 ml), and the mixture is washed with a saturated brine (50 ml×2), dried over anhydrous magnesium sulfate, and concentrated under reduced pressure. To the residue are added ethanol (20 ml) and a 35% aqueous hydrochloric acid solution (2 ml), and the mixture is stirred at 60° C. for 30 minutes. The pH value of the reaction solution is adjusted to pH 10 with a saturated aqueous sodium hydrogen carbonate solution, and the mixture is extracted with chloroform (50 ml×2), washed with a saturated brine (50 ml×2), dried over anhydrous magnesium sulfate, and concentrated under reduced pressure. The residue is purified by silica gel column chromatography (eluent: chloroform/methanol) to give 2-phenoxy-3-[3-(3-(2-hydroxyethoxy)pyridin-4-yl)propoxy]pyridine, which is further treated with fumaric acid to give the title compound (0.17 g), m.p. 129-132° C. (recrystallized from ethanol/isopropyl ether). cooling the mixture is stirred at 50° C. for 30 minutes the mixture is washed with a saturated brine (50 ml×2) dried over anhydrous magnesium sulfate concentrated under reduced pressure To the residue are added ethanol (20 ml) a 35% aqueous hydrochloric acid solution (2 ml), and the mixture is stirred at 60° C. for 30 minutes the mixture is extracted with chloroform (50 ml×2) washed with a saturated brine (50 ml×2) dried over anhydrous magnesium sulfate concentrated under reduced pressure The residue is purified by silica gel column chromatography (eluent: chloroform/methanol)

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

Procedure: A mixture of 2,3-difluoro-6-hydroxybenzaldehyde (2.17 g), 2-(methoxymethyloxy)-ethyl bromide (1.92 mL), potassium carbonate (2.85 g) and sodium iodide (0.41 g) in N,N-dimethylformamide (20 mL) was stirred at room temperature overnight. The reaction mixture was poured into water, and the resulting mixture was extracted with diethyl ether. The extract was washed with water and brine, and dried over anhydrous sodium sulfate. The solvent was removed under reduced pressure, and the residue was purified by column chromatography on silica gel (eluent: n-hexane/ethyl acetate=4/1-1/1) to give 2,3-difluoro-6-[2-(methoxymethyloxy)ethoxy]benzaldehyde (1.02 g). This material was dissolved in tetrahydrofuran (15 mL). To the solution were added water (1.5 mL) and sodium borohydride (92 mg), and the mixture was stirred at room temperature for 1 hour. The reaction mixture was poured into 10% aqueous sodium chloride solution, and the resulting mixture was extracted with ethyl acetate. The extract was washed with brine, and dried over anhydrous sodium sulfate. The solvent was removed under reduced pressure to give the title compound (1.0 g). the resulting mixture was extracted with diethyl ether The extract was washed with water and brine dried over anhydrous sodium sulfate The solvent was removed under reduced pressure the residue was purified by column chromatography on silica gel (eluent: n-hexane/ethyl acetate=4/1-1/1)

Conditions: temp:70.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: To a mixture of 2-(5-chloro-2-oxo-1,3-benzoxazol-3(2H)-yl)-N-[(5,6-dichloro-1H-benzimidazol-2-yl)methyl]-N-methylacetamide (150 mg) and DMF (4.5 mL) were added K2CO3 (94 mg) and 1-bromo-2-(methoxymethoxy)ethane (80 μL), followed by heating and stirring at 70° C. for 5 hours. The reaction mixture was cooled to room temperature and then diluted with EtOAc. The organic layer was washed with water and brine in this order, dried over MgSO4, and then concentrated under reduced pressure. The residue was purified by silica gel column chromatography (eluent: Hex/EtOAc=50/50-0/100) to obtain 2-(5-chloro-2-oxo-1,3-benzoxazol-3(2H)-yl)-N-({5,6-dichloro-1-[2-(methoxymethoxy)ethyl]-1H-benzimidazol-2-yl}methyl)-N-methylacetamide (110 mg). by heating The reaction mixture was cooled to room temperature The organic layer was washed with water and brine in this order dried over MgSO4 concentrated under reduced pressure The residue was purified by silica gel column chromatography (eluent: Hex/EtOAc=50/50-0/100)

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

Procedure: Sodium hydride (60% in mineral oil, 0.08 g, 2.0 mmol) is suspended in DMF (5 ml), and thereto is added 2-phenoxy-3-[3-(3-hydroxypyridin-4-yl)propoxy]pyridine (0.20 g, 0.62 mmol) obtained in Example 30 at room temperature, and the mixture is stirred for 30 minutes. To the mixture is added 2-methoxymethoxyethyl bromide (0.32 g, 2.0 mmol) under ice-cooling, and the mixture is stirred at 50° C. for 30 minutes. To the reaction solution is added chloroform (100 ml), and the mixture is washed with a saturated brine (50 ml×2), dried over anhydrous magnesium sulfate, and concentrated under reduced pressure. To the residue are added ethanol (20 ml) and a 35% aqueous hydrochloric acid solution (2 ml), and the mixture is stirred at 60° C. for 30 minutes. The pH value of the reaction solution is adjusted to pH 10 with a saturated aqueous sodium hydrogen carbonate solution, and the mixture is extracted with chloroform (50 ml×2), washed with a saturated brine (50 ml×2), dried over anhydrous magnesium sulfate, and concentrated under reduced pressure. The residue is purified by silica gel column chromatography (eluent: chloroform/methanol) to give 2-phenoxy-3-[3-(3-(2-hydroxyethoxy)pyridin-4-yl)propoxy]pyridine, which is further treated with fumaric acid to give the title compound (0.17 g), m.p. 129-132° C. (recrystallized from ethanol/isopropyl ether). cooling the mixture is stirred at 50° C. for 30 minutes the mixture is washed with a saturated brine (50 ml×2) dried over anhydrous magnesium sulfate concentrated under reduced pressure To the residue are added ethanol (20 ml) a 35% aqueous hydrochloric acid solution (2 ml), and the mixture is stirred at 60° C. for 30 minutes the mixture is extracted with chloroform (50 ml×2) washed with a saturated brine (50 ml×2) dried over anhydrous magnesium sulfate concentrated under reduced pressure The residue is purified by silica gel column chromatography (eluent: chloroform/methanol)