反应详情

According to the method of Production Example 1, a mixed solution of methyl E-4-(2-dimethylaminovinyl)-3-nitrobenzoate (6.30 g), pyridine (3.2 ml), propionyl chloride (3.26 g) and methylene chloride (60 ml) is heated under reflux for 11 hours, and then heated under reflux with 1,4-dioxane in water for 16 hours to obtain methyl 4-(2-oxobutyl)-3-nitrobenzoate (5.63 g).

1. temperatureunder reflux for 11 hours
2. temperatureheated