反应详情

温度

85 °C

A mixture of m-anisidine (22 g, 178 mmol), 2,2-dimethyl-1,3-dioxane-4,6-dione (30.75 g, 214 mmol) and triethylorthoformate (30 mL, 178 mmol) in ethanol (200 mL) was heated at 85° C. for two hours. The mixture was allowed to cool to room temperature and the precipitate was collected by filtration and washed with ethanol to give 43.7 g (89% yield) of product as a pale yellow solid, mp 108° C.

1. temperatureto cool to room temperature
2. filtrationthe precipitate was collected by filtration
3. washwashed with ethanol