反应详情

A mixture of 1-(3-fluoroisoquinoline-6-carbonyl)thiosemicarbazide (0.98 g, 3.71 mmol) in sulfuric acid (10 mL) was stirred at room temperature for 3 hours. The mixture was poured into ice-ammonium hydroxide (33%). The pH was adjusted to >9 with additional ammonium hydroxide. The precipitate was recovered by filtration and washed with water (4×) to provide the product as an off-white solid (0.84 g, 92%). LCMS (API-ES) m/z: 247 (M+H+).

1. filtrationThe precipitate was recovered by filtration
2. washwashed with water (4×)