反应详情

温度

40 °C

6-O-(2-keto-L-gulonoyl)-L-ascorbate substantially free from 2-keto-L-gulonic acid, 1.2 g (3.4 mmol), was dissolved in 50 ml of water, to which a solution of 1.8 g (8.5 mmol) of sodium carbonate in 5 ml of water was added and stirred at 40° C. for about 2 hours. Quantitative analysis of the reaction mixture according to the method described in Reference Example 1 showed that 1.10 g (yield: 91.9%) of L-ascorbic acid was present with 0.05 g of 2-keto-L-gulonic acid.

1. additionwas added