反应详情

A mixture of the N-Boc quinoxalinedione from Example 32 (18 mg, 0.042 mmol) in trifluoroacetic acid (1.5 mL) was stirred under a nitrogen atmosphere for 15 min. After concentrating to dryness, the residue was triturated with water, basified to pH 8 and filtered. The filtrate was evaporated to give a beige solid (14 mg, 99% yield).

1. concentrationAfter concentrating to dryness
2. customthe residue was triturated with water
3. filtrationfiltered
4. customThe filtrate was evaporated