反应详情

116 g (1.0 mol) of 4-chloro-3-methylpyrazole were dissolved in 115 g (1.0 mol) of phosphoric acid (85%) at room temperature. The water contained in the phosphoric acid was evaporated. After a few hours, the title compound crystallized out of the oil initially present (yield 98%).

1. customwas evaporated
2. waitAfter a few hours
3. customthe title compound crystallized out of the oil initially present (yield 98%)