2-phenylmethoxyacetamide

反応条件: temp:130.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

実験手順: To a solution of 2-Benzyloxy-acetamide (1.40 g, 8.56 mmol) in 4 ml of DMF was added 2-Bromo-1-(4-chloro-phenyl)-ethanone (2.0 g, 8.56 mmol) and the reaction mixture was heated at 130° C. for 6 h under nitrogen atmosphere. After the completion of the reaction mixture (TLC monitoring), water (25 mL) was added and extracted with ethyl acetate (3×50 mL). The combined organics was washed with water, brine, dried (Na2SO4), filtered and concentrated. The crude residue was purified over silica gel (230-400 M, 10% EtOAc-Hexane) to get the desired product (1.1 g, 44%). extracted with ethyl acetate (3×50 mL) The combined organics was washed with water, brine dried (Na2SO4) filtered concentrated The crude residue was purified over silica gel (230-400 M, 10% EtOAc-Hexane)

反応条件: temp:130.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

実験手順: To a solution of 2-Benzyloxy-acetamide (1.40 g, 8.56 mmol) in 4 ml of DMF was added 2-Bromo-1-(4-chloro-phenyl)-ethanone (2.0 g, 8.56 mmol) and the reaction mixture was heated at 130° C. for 6 h under nitrogen atmosphere. After the completion of the reaction mixture (TLC monitoring), water (25 mL) was added and extracted with ethyl acetate (3×50 mL). The combined organics was washed with water, brine, dried (Na2SO4), filtered and concentrated. The crude residue was purified over silica gel (230-400 M, 10% EtOAc-Hexane) to get the desired product (1.1 g, 44%). extracted with ethyl acetate (3×50 mL) The combined organics was washed with water, brine dried (Na2SO4) filtered concentrated The crude residue was purified over silica gel (230-400 M, 10% EtOAc-Hexane)

反応条件: temp:130.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

実験手順: To a solution of 2-Benzyloxy-acetamide (1.40 g, 8.56 mmol) in 4 ml of DMF was added 2-Bromo-1-(4-chloro-phenyl)-ethanone (2.0 g, 8.56 mmol) and the reaction mixture was heated at 130° C. for 6 h under nitrogen atmosphere. After the completion of the reaction mixture (TLC monitoring), water (25 mL) was added and extracted with ethyl acetate (3×50 mL). The combined organics was washed with water, brine, dried (Na2SO4), filtered and concentrated. The crude residue was purified over silica gel (230-400 M, 10% EtOAc-Hexane) to get the desired product (1.1 g, 44%). extracted with ethyl acetate (3×50 mL) The combined organics was washed with water, brine dried (Na2SO4) filtered concentrated The crude residue was purified over silica gel (230-400 M, 10% EtOAc-Hexane)

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

実験手順: 2-Benzyloxymethyl-3-methyl-3H-imidazole-4-carbaldehyde was prepared from 2-benzyloxy-acetamide in the same manner as 2-cyclopropyl-3-methyl-3H-imidazole-4-carbaldehyde (Example 46).

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

実験手順: Starting with the 3-[4-(1,4-dioxa-8-aza-spiro[4.5]dec-8-yl)-3-fluoro-phenyl]-5-hydroxymethyl-oxazolidin-2-one which was formed as an intermediate in Example 3, the procedure of Example 1 was repeated to produce an azide compound in a yield of 90%. The azide compound (1.5 g) was reduced with triphenylphosphine/tetrahydrofuran/water by the same method as in Example 10 to provide a primary amine compound. The amine compound and triethylamine (1.2 ml) were added to dry dichloromethane (20 ml) and benzyloxyacetyl chloride (1.20 g) was subsequently added at 0° C. The reaction mixture was stirred overnight at room temperature and the resulting precipitate was filtered off. The filtrate was concentrated under vacuum and the residue was purified by silica gel column chromatography (methanol/dichloromethane=5/95) to afford a benzyloxyacetamide compound (2.7 g) in a yield of 100%. The benzyloxyacetamide compound (1.9 g) was dissolved in a mixed solvent consisting of methanol (30 ml) and dichloromethane (5 ml). To the solution, 10% palladium hydroxide/carbon (340 mg) was added and the mixture was stirred for 2 days under 3 atm hydrogen atmosphere. The palladium hydroxide was filtered off and the filtrate was concentrated under vacuum. The residue was purified by silica gel column chromatography (methanol/dichloromethane=7/93) to afford an α-hydroxyacetamide compound (780 mg) in a yield of 49%. To a tetrahydrofuran solution (10 ml) of the α-hydroxyacetamide compound (530 mg), p-toluenesulfonyl fluoride (450 mg) and tetrabutylammonium fluoride (1.0M tetrahydrofuran solution; 3.3 ml) were added and the mixture was heated under reflux overnight. The reaction mixture was cooled to room temperature and concentrated under vacuum. The residue was purified by silica gel column chromatography (hexane/acetone=2/3) to afford a monofluoroacetamide compound (562 mg) in a yield of 100%. To 10 ml of an acetone solution of the monofluoroacetamide compound, p-toluenesulfonic acid monohydrate (580 mg) and water (3 ml) were added and the mixture was heated under reflux for 2.5 h. The reaction mixture was cooled to room temperature, neutralized with solid sodium hydrogencarbonate, and concentrated under vacuum. Water was removed by azeotropy with toluene and the residue was purified by silica gel column chromatography (hexane/acetone=1/1) to afford the title compound (408 mg) in a yield of 81%. was subsequently added at 0° C the resulting precipitate was filtered off The filtrate was concentrated under vacuum the residue was purified by silica gel column chromatography (methanol/dichloromethane=5/95)

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

実験手順: 2-Benzyloxymethyl-3-methyl-3H-imidazole-4-carbaldehyde was prepared from 2-benzyloxy-acetamide in the same manner as 2-cyclopropyl-3-methyl-3H-imidazole-4-carbaldehyde (Example 46).

反応条件: temp:130.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

実験手順: To a solution of 2-Benzyloxy-acetamide (1.40 g, 8.56 mmol) in 4 ml of DMF was added 2-Bromo-1-(4-chloro-phenyl)-ethanone (2.0 g, 8.56 mmol) and the reaction mixture was heated at 130° C. for 6 h under nitrogen atmosphere. After the completion of the reaction mixture (TLC monitoring), water (25 mL) was added and extracted with ethyl acetate (3×50 mL). The combined organics was washed with water, brine, dried (Na2SO4), filtered and concentrated. The crude residue was purified over silica gel (230-400 M, 10% EtOAc-Hexane) to get the desired product (1.1 g, 44%). extracted with ethyl acetate (3×50 mL) The combined organics was washed with water, brine dried (Na2SO4) filtered concentrated The crude residue was purified over silica gel (230-400 M, 10% EtOAc-Hexane)

反応条件: temp:130.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

実験手順: To a solution of 2-Benzyloxy-acetamide (1.40 g, 8.56 mmol) in 4 ml of DMF was added 2-Bromo-1-(4-chloro-phenyl)-ethanone (2.0 g, 8.56 mmol) and the reaction mixture was heated at 130° C. for 6 h under nitrogen atmosphere. After the completion of the reaction mixture (TLC monitoring), water (25 mL) was added and extracted with ethyl acetate (3×50 mL). The combined organics was washed with water, brine, dried (Na2SO4), filtered and concentrated. The crude residue was purified over silica gel (230-400 M, 10% EtOAc-Hexane) to get the desired product (1.1 g, 44%). extracted with ethyl acetate (3×50 mL) The combined organics was washed with water, brine dried (Na2SO4) filtered concentrated The crude residue was purified over silica gel (230-400 M, 10% EtOAc-Hexane)