反应详情

温度

90 °C

A solution was prepared by dissolving 67 grams of sodium hydroxide in 400 ml of water. To this solution were added 130 g of maleic acid while maintaining the solution at a temperature below 98° C. An aqueous solution of hydrogen peroxide (30%) was then added, followed by the addition of a solution containing 2.0 g of sodium tungstate dihydrate in 8.0 ml of water. The solution was heated in a 90° C. oil bath for 30 minutes and then cooled to ≤60° C. A solution containing 44 g of aqueous NaOH (50% by weight) was then added to bring the pH to 7.0. The product was analyzed by NMR, giving 14.7% by weight of cis-epoxysuccinic acid and 3.9% by weight of D,L-tartaric acid.

1. customA solution was prepared
2. temperaturewhile maintaining the solution at a temperature below 98° C
3. additionfollowed by the addition of a solution
4. temperaturecooled to ≤60° C
5. additionwas then added