(4S)-4-ethyl-1,3-oxazolidin-2-one

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

実験手順: To a solution of 3-bromo-5-chloropyrazolo[1,5-a]pyrimidine (0.375 g, 1.61 mmol) and (S)-4-ethyloxazolidin-2-one (0.279 g, 2.42 mmol) in DMF (10 mL) was added sodium hydride (0.0968 g, 2.42 mmol) at ambient temperature. The mixture was stirred for 18 hours. Saturated aqueous NH4Cl was added and the solids were collected by filtration. Purification of the crude material by column chromatography (1-10% EtOAc in DCM) provided (S)-3-(3-bromopyrazolo[1,5-a]pyrimidin-5-yl)-4-ethyloxazolidin-2-one (0.282 g, 56% yield) as a pale yellow solid. the solids were collected by filtration Purification of the crude material by column chromatography (1-10% EtOAc in DCM)

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

実験手順: To a solution of 3-bromo-5-chloropyrazolo[1,5-a]pyrimidine (0.375 g, 1.61 mmol) and (S)-4-ethyloxazolidin-2-one (0.279 g, 2.42 mmol) in DMF (10 mL) was added sodium hydride (0.0968 g, 2.42 mmol) at ambient temperature. The mixture was stirred for 18 hours. Saturated aqueous NH4Cl was added and the solids were collected by filtration. Purification of the crude material by column chromatography (1-10% EtOAc in DCM) provided (S)-3-(3-bromopyrazolo[1,5-a]pyrimidin-5-yl)-4-ethyloxazolidin-2-one (0.282 g, 56% yield) as a pale yellow solid. the solids were collected by filtration Purification of the crude material by column chromatography (1-10% EtOAc in DCM)

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

実験手順: To a solution of 3-bromo-5-chloropyrazolo[1,5-a]pyrimidine (0.375 g, 1.61 mmol) and (S)-4-ethyloxazolidin-2-one (0.279 g, 2.42 mmol) in DMF (10 mL) was added sodium hydride (0.0968 g, 2.42 mmol) at ambient temperature. The mixture was stirred for 18 hours. Saturated aqueous NH4Cl was added and the solids were collected by filtration. Purification of the crude material by column chromatography (1-10% EtOAc in DCM) provided (S)-3-(3-bromopyrazolo[1,5-a]pyrimidin-5-yl)-4-ethyloxazolidin-2-one (0.282 g, 56% yield) as a pale yellow solid. the solids were collected by filtration Purification of the crude material by column chromatography (1-10% EtOAc in DCM)