反应详情

To a solution of 4-bromo-1-methyl-1H-pyrazole-5-carbaldehyde (677 mg, 3.58 mmol) in MeOH (8 mL) at 0° C., NaBH4 (136 mg, 0.86 mmol) was added. The solution was stirred at room temperature for 2 hours. The reaction was concentrated in vacuo and diluted with water. The solution was extracted with EtOAc, the organic layer collected, dried over sodium sulphate and concentrated in vacuo to afford the title compound as a white solid (614 mg, 90%).

1. concentrationThe reaction was concentrated in vacuo
2. additiondiluted with water
3. extractionThe solution was extracted with EtOAc
4. customthe organic layer collected
5. dry with materialdried over sodium sulphate
6. concentrationconcentrated in vacuo