[(2R)-butan-2-yl] methanesulfonate

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

実験手順: A solution of methanesulphonic anhydride (8.33 g, 47.8 mmol) in dichloromethane (30 ml) was added dropwise over 30 minutes to an ice-cooled solution of (R)-2-butanol (4.0 ml, 43.5 mmol) and triethylamine (6.65 ml, 47.8 mmol) in dichloromethane (70 ml). The reaction was then allowed to warm to room temperature and stirred for 18 hours. The mixture was then washed with water, 2N hydrochloric acid, then dried (Na2SO4) and evaporated under reduced pressure to give the title compound as a pale yellow oil, 7.0 g. The mixture was then washed with water, 2N hydrochloric acid dried (Na2SO4) evaporated under reduced pressure

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

実験手順: An ice cold solution of (R)-2-butanol (888 mg) in DCM (15 ml) was treated with Et3N (1.26 ml) and followed by dropwise addition of methanesulfonyl chloride (0.52 ml). After 1 h the solution was washed with saturated sodium hydrogen carbonate solution (5 ml), water (2×5 ml), brine (5 ml), dried (MgSO4) and evaporated to give the title compound (D33)(0.9 g). 1H NMR δ (CDCl3): 4.74 (1H, m), 3.00 (3H, s), 1.67 (2H, m), 1.41 (1H, d, J=6.5 Hz), 0.99 (3H, t, J=7.5 Hz). After 1 h the solution was washed with saturated sodium hydrogen carbonate solution (5 ml), water (2×5 ml), brine (5 ml) dried (MgSO4) evaporated

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

実験手順: A solution of methanesulphonic anhydride (8.33 g, 47.8 mmol) in dichloromethane (30 ml) was added dropwise over 30 minutes to an ice-cooled solution of (R)-2-butanol (4.0 ml, 43.5 mmol) and triethylamine (6.65 ml, 47.8 mmol) in dichloromethane (70 ml). The reaction was then allowed to warm to room temperature and stirred for 18 hours. The mixture was then washed with water, 2N hydrochloric acid, then dried (Na2SO4) and evaporated under reduced pressure to give the title compound as a pale yellow oil, 7.0 g. The mixture was then washed with water, 2N hydrochloric acid dried (Na2SO4) evaporated under reduced pressure

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

実験手順: A solution of methanesulphonic anhydride (8.33 g, 47.8 mmol) in dichloromethane (30 ml) was added dropwise over 30 minutes to an ice-cooled solution of (R)-2-butanol (4.0 ml, 43.5 mmol) and triethylamine (6.65 ml, 47.8 mmol) in dichloromethane (70 ml). The reaction was then allowed to warm to room temperature and stirred for 18 hours. The mixture was then washed with water, 2N hydrochloric acid, then dried (Na2SO4) and evaporated under reduced pressure to give the title compound as a pale yellow oil, 7.0 g. The mixture was then washed with water, 2N hydrochloric acid dried (Na2SO4) evaporated under reduced pressure

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

実験手順: A solution of methanesulphonic anhydride (8.33 g, 47.8 mmol) in dichloromethane (30 ml) was added dropwise over 30 minutes to an ice-cooled solution of (R)-2-butanol (4.0ml, 43.5 mmol) and triethylamine (6.65 ml, 47.8 mmol) in dichloromethane (70 ml). The reaction was then allowed to warm to room temperature and stirred for 18 hours. The mixture was then washed with water, 2N hydrochloric acid, then dried (Na2SO4) and evaporated under reduced pressure to give the title compound as a pale yellow oil, 7.0 g. The mixture was then washed with water, 2N hydrochloric acid dried (Na2SO4) evaporated under reduced pressure

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

実験手順: An ice cold solution of (R)-2-butanol (888 mg) in DCM (15 ml) was treated with Et3N (1.26 ml) and followed by dropwise addition of methanesulfonyl chloride (0.52 ml). After 1 h the solution was washed with saturated sodium hydrogen carbonate solution (5 ml), water (2×5 ml), brine (5 ml), dried (MgSO4) and evaporated to give the title compound (D33)(0.9 g). 1H NMR δ (CDCl3): 4.74 (1H, m), 3.00 (3H, s), 1.67 (2H, m), 1.41 (1H, d, J=6.5 Hz), 0.99 (3H, t, J=7.5 Hz). After 1 h the solution was washed with saturated sodium hydrogen carbonate solution (5 ml), water (2×5 ml), brine (5 ml) dried (MgSO4) evaporated

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

実験手順: A solution of methanesulphonic anhydride (8.33 g, 47.8 mmol) in dichloromethane (30 ml) was added dropwise over 30 minutes to an ice-cooled solution of (R)-2-butanol (4.0 ml, 43.5 mmol) and triethylamine (6.65 ml, 47.8 mmol) in dichloromethane (70 ml). The reaction was then allowed to warm to room temperature and stirred for 18 hours. The mixture was then washed with water, 2N hydrochloric acid, then dried (Na2SO4) and evaporated under reduced pressure to give the title compound as a pale yellow oil, 7.0 g. The mixture was then washed with water, 2N hydrochloric acid dried (Na2SO4) evaporated under reduced pressure