5-羟基-2-甲基吲哚-3-羧酸乙酯

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

实验步骤: To (2-chloro-4,5-difluoro-phenyl)-methanol (120, 2.40 g, 0.0134 mol) in dichloromethane (40.0 mL) was added Dess-Martin periodinane (6.84 g, 0.0161 mol). The reaction was stirred at room temperature for 10 minutes. The reaction was poured into aqueous potassium carbonate and extracted with ethyl acetate. The organic layer was dried over anhydrous sodium sulfate and filtered. The filtrate was concentrated and purified by silica gel column chromatography eluting with 30% ethyl acetate in hexane to give a white solid (110, 1.7 g, 71.6%). extracted with ethyl acetate The organic layer was dried over anhydrous sodium sulfate filtered The filtrate was concentrated purified by silica gel column chromatography eluting with 30% ethyl acetate in hexane to give a white solid (110, 1.7 g, 71.6%)

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

实验步骤: To (2-chloro-4,5-difluoro-phenyl)-methanol (120, 2.40 g, 0.0134 mol) in dichloromethane (40.0 mL) was added Dess-Martin periodinane (6.84 g, 0.0161 mol). The reaction was stirred at room temperature for 10 minutes. The reaction was poured into aqueous potassium carbonate and extracted with ethyl acetate. The organic layer was dried over anhydrous sodium sulfate and filtered. The filtrate was concentrated and purified by silica gel column chromatography eluting with 30% ethyl acetate in hexane to give a white solid (110, 1.7 g, 71.6%). extracted with ethyl acetate The organic layer was dried over anhydrous sodium sulfate filtered The filtrate was concentrated purified by silica gel column chromatography eluting with 30% ethyl acetate in hexane to give a white solid (110, 1.7 g, 71.6%)

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

实验步骤: To 2-chloro-4,5-difluoro-benzoic acid methyl ester (119, 5.70 g, 0.0276 mol) in tetrahydrofuran (120.0 mL), 1.00 M of lithium tetrahydroaluminate in tetrahydrofuran (30.0 mL) was added slowly under an atmosphere of nitrogen. The reaction was stirred at room temperature for 4 hours, followed by adding sodium sulfate decahydrate. After 30 minutes, the reaction mixture was filtered, concentrated and purified with silica gel column chromatography eluting with 8% methanol in dichloromethane to give a white solid (120, 4.20 g, 85.2%). After 30 minutes the reaction mixture was filtered concentrated purified with silica gel column chromatography eluting with 8% methanol in dichloromethane to give a white solid (120, 4.20 g, 85.2%)

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

实验步骤: To 2-chloro-4,5-difluoro-benzoic acid methyl ester (119, 5.70 g, 0.0276 mol) in tetrahydrofuran (120.0 mL), 1.00 M of lithium tetrahydroaluminate in tetrahydrofuran (30.0 mL) was added slowly under an atmosphere of nitrogen. The reaction was stirred at room temperature for 4 hours, followed by adding sodium sulfate decahydrate. After 30 minutes, the reaction mixture was filtered, concentrated and purified with silica gel column chromatography eluting with 8% methanol in dichloromethane to give a white solid (120, 4.20 g, 85.2%). After 30 minutes the reaction mixture was filtered concentrated purified with silica gel column chromatography eluting with 8% methanol in dichloromethane to give a white solid (120, 4.20 g, 85.2%)

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

实验步骤: To (2-chloro-4,5-difluoro-phenyl)-methanol (120, 2.40 g, 0.0134 mol) in dichloromethane (40.0 mL) was added Dess-Martin periodinane (6.84 g, 0.0161 mol). The reaction was stirred at room temperature for 10 minutes. The reaction was poured into aqueous potassium carbonate and extracted with ethyl acetate. The organic layer was dried over anhydrous sodium sulfate and filtered. The filtrate was concentrated and purified by silica gel column chromatography eluting with 30% ethyl acetate in hexane to give a white solid (110, 1.7 g, 71.6%). extracted with ethyl acetate The organic layer was dried over anhydrous sodium sulfate filtered The filtrate was concentrated purified by silica gel column chromatography eluting with 30% ethyl acetate in hexane to give a white solid (110, 1.7 g, 71.6%)

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

实验步骤: To 2-chloro-4,5-difluoro-benzoic acid methyl ester (119, 5.70 g, 0.0276 mol) in tetrahydrofuran (120.0 mL), 1.00 M of lithium tetrahydroaluminate in tetrahydrofuran (30.0 mL) was added slowly under an atmosphere of nitrogen. The reaction was stirred at room temperature for 4 hours, followed by adding sodium sulfate decahydrate. After 30 minutes, the reaction mixture was filtered, concentrated and purified with silica gel column chromatography eluting with 8% methanol in dichloromethane to give a white solid (120, 4.20 g, 85.2%). After 30 minutes the reaction mixture was filtered concentrated purified with silica gel column chromatography eluting with 8% methanol in dichloromethane to give a white solid (120, 4.20 g, 85.2%)

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

实验步骤: To (2-chloro-4,5-difluoro-phenyl)-methanol (120, 2.40 g, 0.0134 mol) in dichloromethane (40.0 mL) was added Dess-Martin periodinane (6.84 g, 0.0161 mol). The reaction was stirred at room temperature for 10 minutes. The reaction was poured into aqueous potassium carbonate and extracted with ethyl acetate. The organic layer was dried over anhydrous sodium sulfate and filtered. The filtrate was concentrated and purified by silica gel column chromatography eluting with 30% ethyl acetate in hexane to give a white solid (110, 1.7 g, 71.6%). extracted with ethyl acetate The organic layer was dried over anhydrous sodium sulfate filtered The filtrate was concentrated purified by silica gel column chromatography eluting with 30% ethyl acetate in hexane to give a white solid (110, 1.7 g, 71.6%)

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

实验步骤: To 2-chloro-4,5-difluoro-benzoic acid methyl ester (119, 5.70 g, 0.0276 mol) in tetrahydrofuran (120.0 mL), 1.00 M of lithium tetrahydroaluminate in tetrahydrofuran (30.0 mL) was added slowly under an atmosphere of nitrogen. The reaction was stirred at room temperature for 4 hours, followed by adding sodium sulfate decahydrate. After 30 minutes, the reaction mixture was filtered, concentrated and purified with silica gel column chromatography eluting with 8% methanol in dichloromethane to give a white solid (120, 4.20 g, 85.2%). After 30 minutes the reaction mixture was filtered concentrated purified with silica gel column chromatography eluting with 8% methanol in dichloromethane to give a white solid (120, 4.20 g, 85.2%)