cyanomethyl benzoate

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: Cyanomethyl benzoate (22.2 g, 138 mmol) was dissolved in ethanol (250 mL) followed by addition of 50% aqueous hydroxylamine (16.9 mL, 276 mmol) and the mixture was stirred for 15 minutes at room temperature. Concentration followed by addition of water (250 mL) afforded a colorless crystalline solid that was collected by filtration and washed with additional water then dried in vacuo to give 2-(hydroxyamino)-2-iminoethyl benzoate (23.69 g, 88% yield). 1H-NMR (400 MHz; DMSO-d6): 9.37 (s, 1H), 7.98 (m, 2H), 7.65 (m, 1H), 7.54 (tr, 2H), 5.69 (br s, 2H), 4.64 (s, 2H). Concentration followed by addition of water (250 mL) afforded a colorless crystalline solid that was collected by filtration washed with additional water then dried in vacuo

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

実験手順: Cyanomethyl benzoate (22.2 g, 138 mmol) was dissolved in ethanol (250 mL) followed by addition of 50% aqueous hydroxylamine (16.9 mL, 276 mmol) and the mixture was stirred for 15 minutes at room temperature. Concentration followed by addition of water (250 mL) afforded a colorless crystalline solid that was collected by filtration and washed with additional water then dried in vacuo to give 2-(hydroxyamino)-2-iminoethyl benzoate (23.69 g, 88% yield). 1H-NMR (400 MHz; DMSO-d6): 9.37 (s, 1H), 7.98 (m, 2H), 7.65 (m, 1H), 7.54 (tr, 2H), 5.69 (br s, 2H), 4.64 (s, 2H). Concentration followed by addition of water (250 mL) afforded a colorless crystalline solid that was collected by filtration washed with additional water then dried in vacuo

反応条件: temp:0.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

実験手順: To a suspension of 50.0 g (0.41 mol) benzoic acid in 150 mL N,N-dimethylformamide 70.0 g (0.50 mol) potassium carbonate was added and the mixture was stirred until the evolution of gas has ceased. The reaction mixture was cooled to 0° C. and a solution of 29.0 mL (0.41 mol) bromoacetonitrile in 50 mL N,N-dimethylformamide was added dropwise. The reaction mixture was stirred overnight at room temperature. The solvent was evaporated and the residue was dissolved in 500 mL ethyl acetate. It was washed with water (3×150 mL), saturated aqueous sodium hydrogencarbonate (150 mL) and brine. The organic layer was separated and dried over anhydrous sodium sulfate. The drying agent was filtered off and the solvent was evaporated. The resulting crude product was purified by column chromatography (hexane-ethyl acetate 9:1 to 4:1) to yield cyanomethyl benzoate 62.6 g (95%). 1H-NMR (400 MHz; DMSO-d6): 7.98 (m, 2H), 7.69 (m, 1H), 7.54 (m, 2H), 5.20 (s, 2H); GCMS for C9H7NO2: 161 (M+). was added The reaction mixture was stirred overnight at room temperature The solvent was evaporated the residue was dissolved in 500 mL ethyl acetate It was washed with water (3×150 mL), saturated aqueous sodium hydrogencarbonate (150 mL) and brine The organic layer was separated dried over anhydrous sodium sulfate The drying agent was filtered off the solvent was evaporated The resulting crude product was purified by column chromatography (hexane-ethyl acetate 9:1 to 4:1)

反応条件: temp:0.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

実験手順: To a suspension of 50.0 g (0.41 mol) benzoic acid in 150 mL N,N-dimethylformamide 70.0 g (0.50 mol) potassium carbonate was added and the mixture was stirred until the evolution of gas has ceased. The reaction mixture was cooled to 0° C. and a solution of 29.0 mL (0.41 mol) bromoacetonitrile in 50 mL N,N-dimethylformamide was added dropwise. The reaction mixture was stirred overnight at room temperature. The solvent was evaporated and the residue was dissolved in 500 mL ethyl acetate. It was washed with water (3×150 mL), saturated aqueous sodium hydrogencarbonate (150 mL) and brine. The organic layer was separated and dried over anhydrous sodium sulfate. The drying agent was filtered off and the solvent was evaporated. The resulting crude product was purified by column chromatography (hexane-ethyl acetate 9:1 to 4:1) to yield cyanomethyl benzoate 62.6 g (95%). 1H-NMR (400 MHz; DMSO-d6): 7.98 (m, 2H), 7.69 (m, 1H), 7.54 (m, 2H), 5.20 (s, 2H); GCMS for C9H7NO2: 161 (M+). was added The reaction mixture was stirred overnight at room temperature The solvent was evaporated the residue was dissolved in 500 mL ethyl acetate It was washed with water (3×150 mL), saturated aqueous sodium hydrogencarbonate (150 mL) and brine The organic layer was separated dried over anhydrous sodium sulfate The drying agent was filtered off the solvent was evaporated The resulting crude product was purified by column chromatography (hexane-ethyl acetate 9:1 to 4:1)

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

実験手順: Cyanomethyl benzoate (22.2 g, 138 mmol) was dissolved in ethanol (250 mL) followed by addition of 50% aqueous hydroxylamine (16.9 mL, 276 mmol) and the mixture was stirred for 15 minutes at room temperature. Concentration followed by addition of water (250 mL) afforded a colorless crystalline solid that was collected by filtration and washed with additional water then dried in vacuo to give 2-(hydroxyamino)-2-iminoethyl benzoate (23.69 g, 88% yield). 1H-NMR (400 MHz; DMSO-d6): 9.37 (s, 1H), 7.98 (m, 2H), 7.65 (m, 1H), 7.54 (tr, 2H), 5.69 (br s, 2H), 4.64 (s, 2H). Concentration followed by addition of water (250 mL) afforded a colorless crystalline solid that was collected by filtration washed with additional water then dried in vacuo

反応条件: temp:0.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

実験手順: To a suspension of 50.0 g (0.41 mol) benzoic acid in 150 mL N,N-dimethylformamide 70.0 g (0.50 mol) potassium carbonate was added and the mixture was stirred until the evolution of gas has ceased. The reaction mixture was cooled to 0° C. and a solution of 29.0 mL (0.41 mol) bromoacetonitrile in 50 mL N,N-dimethylformamide was added dropwise. The reaction mixture was stirred overnight at room temperature. The solvent was evaporated and the residue was dissolved in 500 mL ethyl acetate. It was washed with water (3×150 mL), saturated aqueous sodium hydrogencarbonate (150 mL) and brine. The organic layer was separated and dried over anhydrous sodium sulfate. The drying agent was filtered off and the solvent was evaporated. The resulting crude product was purified by column chromatography (hexane-ethyl acetate 9:1 to 4:1) to yield cyanomethyl benzoate 62.6 g (95%). 1H-NMR (400 MHz; DMSO-d6): 7.98 (m, 2H), 7.69 (m, 1H), 7.54 (m, 2H), 5.20 (s, 2H); GCMS for C9H7NO2: 161 (M+). was added The reaction mixture was stirred overnight at room temperature The solvent was evaporated the residue was dissolved in 500 mL ethyl acetate It was washed with water (3×150 mL), saturated aqueous sodium hydrogencarbonate (150 mL) and brine The organic layer was separated dried over anhydrous sodium sulfate The drying agent was filtered off the solvent was evaporated The resulting crude product was purified by column chromatography (hexane-ethyl acetate 9:1 to 4:1)

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: Cyanomethyl benzoate (22.2 g, 138 mmol) was dissolved in ethanol (250 mL) followed by addition of 50% aqueous hydroxylamine (16.9 mL, 276 mmol) and the mixture was stirred for 15 minutes at room temperature. Concentration followed by addition of water (250 mL) afforded a colorless crystalline solid that was collected by filtration and washed with additional water then dried in vacuo to give 2-(hydroxyamino)-2-iminoethyl benzoate (23.69 g, 88% yield). 1H-NMR (400 MHz; DMSO-d6): 9.37 (s, 1H), 7.98 (m, 2H), 7.65 (m, 1H), 7.54 (tr, 2H), 5.69 (br s, 2H), 4.64 (s, 2H). Concentration followed by addition of water (250 mL) afforded a colorless crystalline solid that was collected by filtration washed with additional water then dried in vacuo

反応条件: temp:0.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

実験手順: To a suspension of 50.0 g (0.41 mol) benzoic acid in 150 mL N,N-dimethylformamide 70.0 g (0.50 mol) potassium carbonate was added and the mixture was stirred until the evolution of gas has ceased. The reaction mixture was cooled to 0° C. and a solution of 29.0 mL (0.41 mol) bromoacetonitrile in 50 mL N,N-dimethylformamide was added dropwise. The reaction mixture was stirred overnight at room temperature. The solvent was evaporated and the residue was dissolved in 500 mL ethyl acetate. It was washed with water (3×150 mL), saturated aqueous sodium hydrogencarbonate (150 mL) and brine. The organic layer was separated and dried over anhydrous sodium sulfate. The drying agent was filtered off and the solvent was evaporated. The resulting crude product was purified by column chromatography (hexane-ethyl acetate 9:1 to 4:1) to yield cyanomethyl benzoate 62.6 g (95%). 1H-NMR (400 MHz; DMSO-d6): 7.98 (m, 2H), 7.69 (m, 1H), 7.54 (m, 2H), 5.20 (s, 2H); GCMS for C9H7NO2: 161 (M+). was added The reaction mixture was stirred overnight at room temperature The solvent was evaporated the residue was dissolved in 500 mL ethyl acetate It was washed with water (3×150 mL), saturated aqueous sodium hydrogencarbonate (150 mL) and brine The organic layer was separated dried over anhydrous sodium sulfate The drying agent was filtered off the solvent was evaporated The resulting crude product was purified by column chromatography (hexane-ethyl acetate 9:1 to 4:1)

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

実験手順: Cyanomethyl benzoate (22.2 g, 138 mmol) was dissolved in ethanol (250 mL) followed by addition of 50% aqueous hydroxylamine (16.9 mL, 276 mmol) and the mixture was stirred for 15 minutes at room temperature. Concentration followed by addition of water (250 mL) afforded a colorless crystalline solid that was collected by filtration and washed with additional water then dried in vacuo to give 2-(hydroxyamino)-2-iminoethyl benzoate (23.69 g, 88% yield). 1H-NMR (400 MHz; DMSO-d6): 9.37 (s, 1H), 7.98 (m, 2H), 7.65 (m, 1H), 7.54 (tr, 2H), 5.69 (br s, 2H), 4.64 (s, 2H). Concentration followed by addition of water (250 mL) afforded a colorless crystalline solid that was collected by filtration washed with additional water then dried in vacuo

反応条件: temp:0.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

実験手順: To a suspension of 50.0 g (0.41 mol) benzoic acid in 150 mL N,N-dimethylformamide 70.0 g (0.50 mol) potassium carbonate was added and the mixture was stirred until the evolution of gas has ceased. The reaction mixture was cooled to 0° C. and a solution of 29.0 mL (0.41 mol) bromoacetonitrile in 50 mL N,N-dimethylformamide was added dropwise. The reaction mixture was stirred overnight at room temperature. The solvent was evaporated and the residue was dissolved in 500 mL ethyl acetate. It was washed with water (3×150 mL), saturated aqueous sodium hydrogencarbonate (150 mL) and brine. The organic layer was separated and dried over anhydrous sodium sulfate. The drying agent was filtered off and the solvent was evaporated. The resulting crude product was purified by column chromatography (hexane-ethyl acetate 9:1 to 4:1) to yield cyanomethyl benzoate 62.6 g (95%). 1H-NMR (400 MHz; DMSO-d6): 7.98 (m, 2H), 7.69 (m, 1H), 7.54 (m, 2H), 5.20 (s, 2H); GCMS for C9H7NO2: 161 (MH+). was added The reaction mixture was stirred overnight at room temperature The solvent was evaporated the residue was dissolved in 500 mL ethyl acetate It was washed with water (3×150 mL), saturated aqueous sodium hydrogencarbonate (150 mL) and brine The organic layer was separated dried over anhydrous sodium sulfate The drying agent was filtered off the solvent was evaporated The resulting crude product was purified by column chromatography (hexane-ethyl acetate 9:1 to 4:1)