反应详情

温度

90 °C

An 87.2 g. portion of 4-methylthiosemicarbazide and 113.2 g. of 3-chloro-2,2-dimethylpropionic acid were suspended in 300 ml. of dioxane. The mixture was heated to 90°C. and 139.5 g. of phosphorus oxychloride was added dropwise while holding the temperature constant. After the addition was complete, the reaction mixture was stirred at 90°C. for three hours. The mixture was then allowed to cool and stand overnight at room temperature.

1. additionAfter the addition
2. temperatureto cool
3. waitstand overnight at room temperature