反应详情

In a 2-liter three-necked flask chilled with ice, 455 g of iron(III) sulfate hexahydrate and 193 ml of ice-water were placed, and vigorously stirred to completely dissolve iron(III) sulfate hexa-hydrate in water. Thereafter, 58.7 g of 1,2-dimethoxybenzene was further added to the solution and 882 ml of concentrated sulfuric acid was gradually added with cooling to prepare a mixture. After reaction of 24 hours, 9 liter of ice-water was gradually added to the reaction mixture. After stirring of 5 hours, the reaction mixture was filtered through a glass filter to obtain crude crystals of the above compound (TP-A) of 48.1 g (yield: 83%)

1. additionwas gradually added
2. temperaturewith cooling
3. customto prepare a mixture
4. additionwas gradually added to the reaction mixture
5. filtrationthe reaction mixture was filtered through a glass
6. filtrationfilter
7. customto obtain crude crystals of the above compound (TP-A) of 48.1 g (yield: 83%)