N-(3-amino-2-methylphenyl)methanesulfonamide

反応条件: temp:0.00; pressure:0.00; stir:

反応条件: temp:0.00; pressure:0.00; stir:

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

実験手順: To a mixture of N-(3-amino-2-methyl-phenyl)-methanesulfonamide (1.5 g, from Example 6, part 1) in THF (30 mL) was added 2-chloroethylisocyanate (0.7 mL) dropwise at 0° C. The reaction mixture was slowly warmed to room temperature and stirred overnight. The precipitate was filtered, rinsed with THF, and dried to give N-{3-[3-(2-chloro-ethyl)-ureido]-2-methyl-phenyl}-methanesulfonamide (1.8 g). To the above compound (1.7 g) in acetonitrile (100 mL) was added potassium fluoride (40 wt. % on alumina) (3.5 g). The mixture was heated at 80° C. for 8 hr and filtered, washed with methanol . The filtrate was evaporated under reduced pressure. The residue was purified by flash chromatography on silica gel eluting with methanol:dichloromethane (5:95) to afford N-[2-methyl-3-(oxazolidin-2-ylideneamino)-phenyl]-methanesulfonamide. This was converted to oxalate salt (0.5 g), mp 124-140° C. in a manner similar to that described above in Example 7, part 4. The precipitate was filtered rinsed with THF dried

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

実験手順: To a mixture of N-(3-amino-2-methyl-phenyl)-methanesulfonamide (1.5 g, from Example 6, part 1) in THF (30 mL) was added 2-chloroethylisocyanate (0.7 mL) dropwise at 0° C. The reaction mixture was slowly warmed to room temperature and stirred overnight. The precipitate was filtered, rinsed with THF, and dried to give N-{3-[3-(2-chloro-ethyl)-ureido]-2-methyl-phenyl}-methanesulfonamide (1.8 g). To the above compound (1.7 g) in acetonitrile (100 mL) was added potassium fluoride (40 wt. % on alumina) (3.5 g). The mixture was heated at 80° C. for 8 hr and filtered, washed with methanol . The filtrate was evaporated under reduced pressure. The residue was purified by flash chromatography on silica gel eluting with methanol:dichloromethane (5:95) to afford N-[2-methyl-3-(oxazolidin-2-ylideneamino)-phenyl]-methanesulfonamide. This was converted to oxalate salt (0.5 g), mp 124-140° C. in a manner similar to that described above in Example 7, part 4. The precipitate was filtered rinsed with THF dried

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

実験手順: A mixture of N-(2-methyl-3-nitro-phenyl)-methanesulfonamide (1.5 g) and tin(II) chloride dihydrate (7.4 g) in ethanol (15 mL) and ethyl acetate (15 mL, from Burdick and Jackson, Muskegon, Mich.) was stirred at room temperature overnight. The reaction mixture was treated with saturated sodium bicarbonate solution to pH>9. The mixture was filtered and the filtrate was washed with water and brine. After drying over anhydrous sodium sulfate and evaporation of solvent, N-(3-amino-2-methyl-phenyl)-methanesulfonamide (1 g) was obtained. The mixture was filtered the filtrate was washed with water and brine After drying over anhydrous sodium sulfate and evaporation of solvent

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

実験手順: To a mixture of N-(3-amino-2-methyl-phenyl)-methanesulfonamide (1.5 g, from Example 6, part 1) in THF (30 mL) was added 2-chloroethylisocyanate (0.7 mL) dropwise at 0° C. The reaction mixture was slowly warmed to room temperature and stirred overnight. The precipitate was filtered, rinsed with THF, and dried to give N-{3-[3-(2-chloro-ethyl)-ureido]-2-methyl-phenyl}-methanesulfonamide (1.8 g). To the above compound (1.7 g) in acetonitrile (100 mL) was added potassium fluoride (40 wt. % on alumina) (3.5 g). The mixture was heated at 80° C. for 8 hr and filtered, washed with methanol . The filtrate was evaporated under reduced pressure. The residue was purified by flash chromatography on silica gel eluting with methanol:dichloromethane (5:95) to afford N-[2-methyl-3-(oxazolidin-2-ylideneamino)-phenyl]-methanesulfonamide. This was converted to oxalate salt (0.5 g), mp 124-140° C. in a manner similar to that described above in Example 7, part 4. The precipitate was filtered rinsed with THF dried

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

実験手順: To a mixture of N-(3-amino-2-methyl-phenyl)-methanesulfonamide (1.5 g, from Example 6, part 1) in THF (30 mL) was added 2-chloroethylisocyanate (0.7 mL) dropwise at 0° C. The reaction mixture was slowly warmed to room temperature and stirred overnight. The precipitate was filtered, rinsed with THF, and dried to give N-{3-[3-(2-chloro-ethyl)-ureido]-2-methyl-phenyl}-methanesulfonamide (1.8 g). To the above compound (1.7 g) in acetonitrile (100 mL) was added potassium fluoride (40 wt. % on alumina) (3.5 g). The mixture was heated at 80° C. for 8 hr and filtered, washed with methanol . The filtrate was evaporated under reduced pressure. The residue was purified by flash chromatography on silica gel eluting with methanol:dichloromethane (5:95) to afford N-[2-methyl-3-(oxazolidin-2-ylideneamino)-phenyl]-methanesulfonamide. This was converted to oxalate salt (0.5 g), mp 124-140° C. in a manner similar to that described above in Example 7, part 4. The precipitate was filtered rinsed with THF dried

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

実験手順: A mixture of N-(2-methyl-3-nitro-phenyl)-methanesulfonamide (1.5 g) and tin(II) chloride dihydrate (7.4 g) in ethanol (15 mL) and ethyl acetate (15 mL, from Burdick and Jackson, Muskegon, Mich.) was stirred at room temperature overnight. The reaction mixture was treated with saturated sodium bicarbonate solution to pH>9. The mixture was filtered and the filtrate was washed with water and brine. After drying over anhydrous sodium sulfate and evaporation of solvent, N-(3-amino-2-methyl-phenyl)-methanesulfonamide (1 g) was obtained. The mixture was filtered the filtrate was washed with water and brine After drying over anhydrous sodium sulfate and evaporation of solvent

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

実験手順: A mixture of N-(2-methyl-3-nitro-phenyl)-methanesulfonamide (1.5 g) and tin(II) chloride dihydrate (7.4 g) in ethanol (15 mL) and ethyl acetate (15 mL, from Burdick and Jackson, Muskegon, Mich.) was stirred at room temperature overnight. The reaction mixture was treated with saturated sodium bicarbonate solution to pH>9. The mixture was filtered and the filtrate was washed with water and brine. After drying over anhydrous sodium sulfate and evaporation of solvent, N-(3-amino-2-methyl-phenyl)-methanesulfonamide (1 g) was obtained. The mixture was filtered the filtrate was washed with water and brine After drying over anhydrous sodium sulfate and evaporation of solvent

反応条件: temp:0.00; pressure:0.00; stir:

反応条件: temp:0.00; pressure:0.00; stir:

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

実験手順: The product from Example 1B and benzaldehyde were processed as described in Example 1C to provide the title compound.