N-(diphenoxymethylidene)methanesulfonamide

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

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

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: 11.6 g of diphenyl methanesulfonylimidocarbonate was dissolved in 40 ml of methylene chloride. With ice-cooling, thereto was added 15 g of 2-[[5-[N-methyl-N-(2,2,2-trichloroethoxycarbonyl)aminomethyl]-2furyl]methylthio]ethylamine. The mixture was stirred for 10 minutes. The solvent was removed by distillation under reduced pressure. The residue thus obtained was purified by a column chromatography (eluant: benzene:ethyl acetate=2:1) to obtain 17.8 g (yield: 78%) of oily N-methanesulfonyl-N'-[2-[[5-[N-methyl-N-(2,2,2-trichloroethoxycarbonyl)aminomethyl]-2furyl]methylthio]ethyl]-O-phenylisourea. With ice-cooling The solvent was removed by distillation under reduced pressure The residue thus obtained was purified by a column chromatography (eluant: benzene:ethyl acetate=2:1)

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

Procedure: 267 g of diphenyl carbonate and 298 g of phosphorus pentachloride were reacted at 160° C. for 15 hours with distilling off the phosphorus oxychloride generated by the reaction. After the completion of the reaction, phosphorus oxychloride and residual phosphorus pentachloride were removed by distillation under reduced pressure to obtain dichloro-diphenoxymethane. Thereto were added 600 ml of anhydrous ethyl acetate and 148 g of methanesulfonamide, and the mixture was refluxed for 8 hours. After cooling, 1 liter of n-hexane was added to the mixture and the crystals deposited were collected by filtration. The crystals were washed with water and dried to obtain 179 g (yield: 49%) of diphenyl methanesulfonylimidocarbonate having a melting point of 124°-125.5° C. the mixture was refluxed for 8 hours After cooling the crystals deposited were collected by filtration The crystals were washed with water dried

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

Procedure: 267 g of diphenyl carbonate and 298 g of phosphorus pentachloride were reacted at 160° C. for 15 hours with distilling off the phosphorus oxychloride generated by the reaction. After the completion of the reaction, phosphorus oxychloride and residual phosphorus pentachloride were removed by distillation under reduced pressure to obtain dichloro-diphenoxymethane. Thereto were added 600 ml of anhydrous ethyl acetate and 148 g of methanesulfonamide, and the mixture was refluxed for 8 hours. After cooling, 1 liter of n-hexane was added to the mixture and the crystals deposited were collected by filtration. The crystals were washed with water and dried to obtain 179 g (yield: 49%) of diphenyl methanesulfonylimidocarbonate having a melting point of 124°-125.5° C. the mixture was refluxed for 8 hours After cooling the crystals deposited were collected by filtration The crystals were washed with water dried

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

Procedure: 267 g of diphenyl carbonate and 298 g of phosphorus pentachloride were reacted at 160° C. for 15 hours with distilling off the phosphorus oxychloride generated by the reaction. After the completion of the reaction, phosphorus oxychloride and residual phosphorus pentachloride were removed by distillation under reduced pressure to obtain dichloro-diphenoxymethane. Thereto were added 600 ml of anhydrous ethyl acetate and 148 g of methanesulfonamide, and the mixture was refluxed for 8 hours. After cooling, 1 liter of n-hexane was added to the mixture and the crystals deposited were collected by filtration. The crystals were washed with water and dried to obtain 179 g (yield: 49%) of diphenyl methanesulfonylimidocarbonate having a melting point of 124°-125.5° C. the mixture was refluxed for 8 hours After cooling the crystals deposited were collected by filtration The crystals were washed with water dried

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

Procedure: Diphenyl methylsulfonylcarbonimidate from step A (0.75 g, 2.59 mmol) and 3-bromoaniline (0.28 ml, 2.59 mmol) were dissolved in acetonitrile (5 ml) and heated to 70° C. for 12 hours. The reaction was cooled to room temperature and concentrated under vacuum. Purification by flash chromatography (30% EtOAc/hexanes) afforded phenyl N-3-bromophenyl-N′-(methylsulfonyl)carbamimidate (0.50 g, 1.35 mmol, 52%). The reaction was cooled to room temperature concentrated under vacuum Purification by flash chromatography (30% EtOAc/hexanes)

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

Procedure: Dichlorodiphenoxymethane (2 g, 7.46 mmol) and methylsulfonamide (1.56 g, 16.41 mmol) were dissolved in EtOAc (15 ml) and heated to reflux for 12 hours. The mixture was allowed to cool and was concentrated under vacuum. Purification of the crude mixture by flash chromatography (20% EtOAc/hexanes) afforded diphenyl methylsulfonylcarbonimidate (0.75 g, 2.59 mmol, 35%). heated to reflux for 12 hours to cool was concentrated under vacuum Purification of the crude mixture by flash chromatography (20% EtOAc/hexanes)

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

Procedure: To a solution of dichlorophenoxymethane (1 g) in acetonitrile (10 mL) was added methanesulfonamide (0.39 g) under ice-cooling, and the mixture was stirred at room temperature for 48 hours. The reaction mixture was poured into a saturated aqueous sodium hydrogen carbonate solution, and the resuling mixture was extracted with ethyl acetate. The organic layer was washed with water and brine, and dried over anhydrous magnesium sulfate. The solvent was removed under reduced pressure to give 1-(N-methanesulfonylimino)-1,1-diphenoxymethane (0.95 g). To a solution of 3-(2,3,4,6-tetra-O-acetyl-β-D-glucopyranosyloxy)-4-{[4-(2-aminoethoxy)-2-methylphenyl]methyl}-5-isopropyl-1H-pyrazole (50 mg) in tetrahydrofuran (1 mL) was added 1-(N-methanesulfonylimino)-1,1-diphenoxymethane (26 mg) under ice-cooling, and the mixture was stirred at room temperature for 1 hour. To the reaction mixture was added 2-aminoethanol (49 mg), and the mixture was stirred at 60° C. overnight. The reaction mixture was concentrated under reduced pressure, and the residue was dissolved in methanol (2 mL). To the solution was added sodium methoxide (28% methanol solution, 0.008 mL), and the mixture was stirred at room temperature for 3 hours. To the reaction mixture was added acetic acid (0.01 mL). The resulting mixture was concentrated under reduced pressure, and the residue was purified by solid phase extraction on ODS (washing solvent: distilled water, eluent: methanol) to give the title compound (38 mg). cooling the mixture was stirred at 60° C. overnight The reaction mixture was concentrated under reduced pressure the residue was dissolved in methanol (2 mL) To the solution was added sodium methoxide (28% methanol solution, 0.008 mL) the mixture was stirred at room temperature for 3 hours To the reaction mixture was added acetic acid (0.01 mL) The resulting mixture was concentrated under reduced pressure the residue was purified by solid phase extraction on ODS (washing solvent: distilled water, eluent: methanol)

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

Procedure: To a solution of dichlorophenoxymethane (1 g) in acetonitrile (10 mL) was added methanesulfonamide (0.39 g) under ice-cooling, and the mixture was stirred at room temperature for 48 hours. The reaction mixture was poured into a saturated aqueous sodium hydrogen carbonate solution, and the resuling mixture was extracted with ethyl acetate. The organic layer was washed with water and brine, and dried over anhydrous magnesium sulfate. The solvent was removed under reduced pressure to give 1-(N-methanesulfonylimino)-1,1-diphenoxymethane (0.95 g). To a solution of 3-(2,3,4,6-tetra-O-acetyl-β-D-glucopyranosyloxy)-4-{[4-(2-aminoethoxy)-2-methylphenyl]methyl}-5-isopropyl-1H-pyrazole (50 mg) in tetrahydrofuran (1 mL) was added 1-(N-methanesulfonylimino)-1,1-diphenoxymethane (26 mg) under ice-cooling, and the mixture was stirred at room temperature for 1 hour. To the reaction mixture was added 2-aminoethanol (49 mg), and the mixture was stirred at 60° C. overnight. The reaction mixture was concentrated under reduced pressure, and the residue was dissolved in methanol (2 mL). To the solution was added sodium methoxide (28% methanol solution, 0.008 mL), and the mixture was stirred at room temperature for 3 hours. To the reaction mixture was added acetic acid (0.01 mL). The resulting mixture was concentrated under reduced pressure, and the residue was purified by solid phase extraction on ODS (washing solvent: distilled water, eluent: methanol) to give the title compound (38 mg). cooling the resuling mixture was extracted with ethyl acetate The organic layer was washed with water and brine dried over anhydrous magnesium sulfate The solvent was removed under reduced pressure