反应详情

A mixture of 4-hydroxy-7-phenoxy-isoquinoline-3-carboxylic acid methyl ester (100 mg, 0.34 mmol) and 4-aminobutyric acid (525 mg, 5.1 mmol) in 0.5 N NaOMe in MeOH solution (6.8 mL, 3.4 mmol) was heated to reflux overnight. Reaction mixture was diluted with water (100 mL) and acidified by 1 N HCl solution to pH=3-4. Precipitate was collected and rinsed with water. It was dried in vacuo to provide the title compound (117 mg, 0.32 mmol) in 94% yield. LC-MS ESI−: 365.05 (M−1)−.

1. temperaturewas heated
2. temperatureto reflux overnight
3. customReaction mixture
4. customPrecipitate was collected
5. washrinsed with water
6. customIt was dried in vacuo