西洛多辛杂质18

反应条件: temp:0.00; pressure:0.00; stir:

反应条件: temp:0.00; pressure:0.00; stir:

反应条件: temp:0.00; pressure:0.00; stir:

反应条件: temp:0.00; pressure:0.00; stir:

反应条件: temp:0.00; pressure:0.00; stir:

反应条件: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

实验步骤: To a solution of 2-[2-(2,2,2-trifluoroethoxy)phenoxy]ethanol (210 mg) in methylene chloride (1 ml) were added triethylamine (186 μl) and methanesulfonyl chloride (83 μl) with stirring under ice cooling, and the mixture was reacted at room temperature for 30 minutes. The reaction mixture was concentrated under reduced pressure. To the concentrate was added water, and the mixture was extracted with diethyl ether. The extract was washed with water, dried over anhydrous magnesium sulfate. The solvent was evaporated under reduced pressure, and the residue was purified by medium pressure liquid column chromatography on silica gel using a mixture of hexane and ethyl acetate (2/1) as eluent to give 273 mg of 2-[2-(2,2,2-trifluoroethoxy)phenoxy]ethyl methansulfonate melting at 40.5°-42.0° C. the mixture was reacted at room temperature for 30 minutes The reaction mixture was concentrated under reduced pressure To the concentrate was added water the mixture was extracted with diethyl ether The extract was washed with water dried over anhydrous magnesium sulfate The solvent was evaporated under reduced pressure the residue was purified by medium pressure liquid column chromatography on silica gel using a mixture of hexane and ethyl acetate (2/1) as eluent

反应条件: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

实验步骤: To a solution of 2-[2-(2,2,2-trifluoroethoxy)phenoxy]ethanol (210 mg) in methylene chloride (1 ml) were added triethylamine (186 μl) and methanesulfonyl chloride (83 μl) with stirring under ice cooling, and the mixture was reacted at room temperature for 30 minutes. The reaction mixture was concentrated under reduced pressure. To the concentrate was added water, and the mixture was extracted with diethyl ether. The extract was washed with water, dried over anhydrous magnesium sulfate. The solvent was evaporated under reduced pressure, and the residue was purified by medium pressure liquid column chromatography on silica gel using a mixture of hexane and ethyl acetate (2/1) as eluent to give 273 mg of 2-[2-(2,2,2-trifluoroethoxy)phenoxy]ethyl methansulfonate melting at 40.5°-42.0° C. the mixture was reacted at room temperature for 30 minutes The reaction mixture was concentrated under reduced pressure To the concentrate was added water the mixture was extracted with diethyl ether The extract was washed with water dried over anhydrous magnesium sulfate The solvent was evaporated under reduced pressure the residue was purified by medium pressure liquid column chromatography on silica gel using a mixture of hexane and ethyl acetate (2/1) as eluent

反应条件: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

实验步骤: To a suspension of lithium aluminum hydride (79 mg) in dry tetrahydrofuran (1 ml) was added dropwise a solution of ethyl 2-(2,2,2-trifluoroethoxy)phenoxyacetate (270 mg) in dry tetrahydrofuran (3 ml) with stirring under ice cooling, and the mixture was reacted at room temperature for 40 minutes. To the reaction mixture were added anhydrous sodium sulfate and water with stirring. The insoluble materials were filtered off, and the filtrate was concentrated under reduced pressure. The residue was purified by medium pressure liquid column chromatography on silica gel using a mixture of hexane and ethyl acetate (2/1) as eluent to give 213 mg of 2-[2-(2,2,2-trifluoroethoxy)phenoxy]ethanol as an oil. the mixture was reacted at room temperature for 40 minutes with stirring The insoluble materials were filtered off the filtrate was concentrated under reduced pressure The residue was purified by medium pressure liquid column chromatography on silica gel using a mixture of hexane and ethyl acetate (2/1) as eluent

反应条件: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

实验步骤: To a suspension of lithium aluminum hydride (79 mg) in dry tetrahydrofuran (1 ml) was added dropwise a solution of ethyl 2-(2,2,2-trifluoroethoxy)phenoxyacetate (270 mg) in dry tetrahydrofuran (3 ml) with stirring under ice cooling, and the mixture was reacted at room temperature for 40 minutes. To the reaction mixture were added anhydrous sodium sulfate and water with stirring. The insoluble materials were filtered off, and the filtrate was concentrated under reduced pressure. The residue was purified by medium pressure liquid column chromatography on silica gel using a mixture of hexane and ethyl acetate (2/1) as eluent to give 213 mg of 2-[2-(2,2,2-trifluoroethoxy)phenoxy]ethanol as an oil. the mixture was reacted at room temperature for 40 minutes with stirring The insoluble materials were filtered off the filtrate was concentrated under reduced pressure The residue was purified by medium pressure liquid column chromatography on silica gel using a mixture of hexane and ethyl acetate (2/1) as eluent

反应条件: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

实验步骤: To a solution of 2-[2-(2,2,2-trifluoroethoxy)phenoxy]ethanol (210 mg) in methylene chloride (1 ml) were added triethylamine (186 μl) and methanesulfonyl chloride (83 μl) with stirring under ice cooling, and the mixture was reacted at room temperature for 30 minutes. The reaction mixture was concentrated under reduced pressure. To the concentrate was added water, and the mixture was extracted with diethyl ether. The extract was washed with water, dried over anhydrous magnesium sulfate. The solvent was evaporated under reduced pressure, and the residue was purified by medium pressure liquid column chromatography on silica gel using a mixture of hexane and ethyl acetate (2/1) as eluent to give 273 mg of 2-[2-(2,2,2-trifluoroethoxy)phenoxy]ethyl methansulfonate melting at 40.5°-42.0° C. the mixture was reacted at room temperature for 30 minutes The reaction mixture was concentrated under reduced pressure To the concentrate was added water the mixture was extracted with diethyl ether The extract was washed with water dried over anhydrous magnesium sulfate The solvent was evaporated under reduced pressure the residue was purified by medium pressure liquid column chromatography on silica gel using a mixture of hexane and ethyl acetate (2/1) as eluent

反应条件: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

实验步骤: To a suspension of lithium aluminum hydride (79 mg) in dry tetrahydrofuran (1 ml) was added dropwise a solution of ethyl 2-(2,2,2-trifluoroethoxy)phenoxyacetate (270 mg) in dry tetrahydrofuran (3 ml) with stirring under ice cooling, and the mixture was reacted at room temperature for 40 minutes. To the reaction mixture were added anhydrous sodium sulfate and water with stirring. The insoluble materials were filtered off, and the filtrate was concentrated under reduced pressure. The residue was purified by medium pressure liquid column chromatography on silica gel using a mixture of hexane and ethyl acetate (2/1) as eluent to give 213 mg of 2-[2-(2,2,2-trifluoroethoxy)phenoxy]ethanol as an oil. the mixture was reacted at room temperature for 40 minutes with stirring The insoluble materials were filtered off the filtrate was concentrated under reduced pressure The residue was purified by medium pressure liquid column chromatography on silica gel using a mixture of hexane and ethyl acetate (2/1) as eluent

反应条件: temp:0.00; pressure:0.00; stir: