ethyl 1-(methylsulfonyloxymethyl)cyclopropane-1-carboxylate

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:

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 solution of 222 mg of 1-methanesulfonyloxymethyl-cyclopropane carboxylic acid ethyl ester in 5 mL of tetrahydrofuran was added 3 mL of 2M dimethyl amine in tetrahydrofuran, and stirred at room temperature for 3 days. The solvent was distilled off, and the residue was added with 2 mL of 1N hydrochloric acid, and washed with diethyl ether. The aqueous layer was added with 10% potassium carbonate aqueous solution, and extracted with ethyl acetate. The extracted layer was washed with saturated brine, and dried over anhydrous magnesium sulfate. The solvent was evaporated, to afford 56 mg of the title compound as a pale yellow oil. The solvent was distilled off the residue was added with 2 mL of 1N hydrochloric acid washed with diethyl ether The aqueous layer was added with 10% potassium carbonate aqueous solution extracted with ethyl acetate The extracted layer was washed with saturated brine dried over anhydrous magnesium sulfate The solvent was evaporated

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 solution of 222 mg of 1-methanesulfonyloxymethyl-cyclopropane carboxylic acid ethyl ester in 5 mL of tetrahydrofuran was added 3 mL of 2M dimethyl amine in tetrahydrofuran, and stirred at room temperature for 3 days. The solvent was distilled off, and the residue was added with 2 mL of 1N hydrochloric acid, and washed with diethyl ether. The aqueous layer was added with 10% potassium carbonate aqueous solution, and extracted with ethyl acetate. The extracted layer was washed with saturated brine, and dried over anhydrous magnesium sulfate. The solvent was evaporated, to afford 56 mg of the title compound as a pale yellow oil. The solvent was distilled off the residue was added with 2 mL of 1N hydrochloric acid washed with diethyl ether The aqueous layer was added with 10% potassium carbonate aqueous solution extracted with ethyl acetate The extracted layer was washed with saturated brine dried over anhydrous magnesium sulfate The solvent was evaporated

反応条件: temp:23.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

実験手順: Sodium methanethiolate (4.36 g, 62.30 mmol) was added to a stirred solution of ethyl 1-((methylsulfonyloxy)methyl)cyclopropanecarboxylate (6.92 g, 31.10 mmol) in N,N-dimethylformamide (62.30 mL) at 23° C. The resulting brown suspension was stirred at 23° C. for 18 h. The reaction mixture was diluted with water and extracted with diethyl ether. The combined organic layers were dried (MgSO4), filtered, and concentrated by rotary evaporation to afford the title compound as a brown oil (5.43 g, 100%): 1H NMR (300 MHz, CDCl3) δ 4.14 (q, J=7 Hz, 2H), 2.83 (s, 2H), 2.16 (s, 3H), 1.31 (dd, J=7, 4 Hz, 2H), 1.25 (t, J=7 Hz, 3H), 0.89 (dd, J=7, 4 Hz, 2H). extracted with diethyl ether The combined organic layers were dried (MgSO4) filtered concentrated by rotary evaporation

反応条件: temp:23.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

実験手順: Sodium methanethiolate (4.36 g, 62.30 mmol) was added to a stirred solution of ethyl 1-((methylsulfonyloxy)methyl)cyclopropanecarboxylate (6.92 g, 31.10 mmol) in N,N-dimethylformamide (62.30 mL) at 23° C. The resulting brown suspension was stirred at 23° C. for 18 h. The reaction mixture was diluted with water and extracted with diethyl ether. The combined organic layers were dried (MgSO4), filtered, and concentrated by rotary evaporation to afford the title compound as a brown oil (5.43 g, 100%): 1H NMR (300 MHz, CDCl3) δ 4.14 (q, J=7 Hz, 2H), 2.83 (s, 2H), 2.16 (s, 3H), 1.31 (dd, J=7, 4 Hz, 2H), 1.25 (t, J=7 Hz, 3H), 0.89 (dd, J=7, 4 Hz, 2H). extracted with diethyl ether The combined organic layers were dried (MgSO4) filtered concentrated by rotary evaporation

反応条件: temp:23.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

実験手順: Triethylamine (5.57 mL, 40.00 mmol) and methanesulfonyl chloride (2.85 mL, 36.60 mmol) were sequentially added to a stirred solution of ethyl 1-(hydroxymethyl)cyclopropanecarboxylate (4.80 g, 33.30 mmol) in dichloromethane (83 mL) at 23° C. The resulting bright yellow solution was stirred at 23° C. for 20 h. The reaction mixture was diluted with water and extracted with dichloromethane. The combined organic layers were dried (MgSO4), filtered, and concentrated to dryness to give the desired product as a brown oil (6.92 g, 94%): 1H NMR (300 MHz, CDCl3) δ 4.33 (s, 2H), 4.16 (q, J=7 Hz, 2H), 3.08 (s, 3H), 1.43 (dd, J=7, 4 Hz, 2H), 1.26 (t, J=7 Hz, 3H), 1.04 (dd, J=7, 4 Hz, 2H). extracted with dichloromethane The combined organic layers were dried (MgSO4) filtered concentrated to dryness

反応条件: temp:23.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

実験手順: Triethylamine (5.57 mL, 40.00 mmol) and methanesulfonyl chloride (2.85 mL, 36.60 mmol) were sequentially added to a stirred solution of ethyl 1-(hydroxymethyl)cyclopropanecarboxylate (4.80 g, 33.30 mmol) in dichloromethane (83 mL) at 23° C. The resulting bright yellow solution was stirred at 23° C. for 20 h. The reaction mixture was diluted with water and extracted with dichloromethane. The combined organic layers were dried (MgSO4), filtered, and concentrated to dryness to give the desired product as a brown oil (6.92 g, 94%): 1H NMR (300 MHz, CDCl3) δ 4.33 (s, 2H), 4.16 (q, J=7 Hz, 2H), 3.08 (s, 3H), 1.43 (dd, J=7, 4 Hz, 2H), 1.26 (t, J=7 Hz, 3H), 1.04 (dd, J=7, 4 Hz, 2H). extracted with dichloromethane The combined organic layers were dried (MgSO4) filtered concentrated to dryness