反应详情

温度

0 °C

N-(2-Mercapto-2-methylpropanoyl)-L-cysteine (11.2 g, 0.05 mol) is dissolved in N sodium hydroxide (50 ml) and then pivaloyl chloride (6.6 g, 0.055 mol) and N sodium hydroxide (60 ml) are added dropwise while stirring under a nitrogen atmosphere at 0° C. After the addition, the mixture is stirred for 1 hour at room temperature and acidified with 6 N hydrochloric acid. The produced oil is extracted with ethyl acetate. The organic layer is washed with water, dried and concentrated to dryness to yield 11.5 g (75.0%) S-pivaloyl-N-(2-mercapto-2-methylpropanoyl)-L-cysteine.

1. additionAfter the addition
2. stirringthe mixture is stirred for 1 hour at room temperature
3. extractionThe produced oil is extracted with ethyl acetate
4. washThe organic layer is washed with water
5. customdried
6. concentrationconcentrated to dryness