反应详情

温度

100 °C

2.56 mmol of 2,2-dimethyl-4,6-dioxo-5-[3-[(triphenylmethyl)thio]propyl]-1,3-dioxane-5-propanoic acid methyl ester (II) (1.4 g) with 18 mmol of sodium hydroxide (0.72 g) was dissolved in a mixture of 5 ml of 1,4-dioxane and 5 ml of water. The mixture was then heated to 100° C. for 1 hour, evaporated to dryness, dissolved in water and precipitated by addition of 1 M sulfuric acid. The precipitate was filtered off, washed with water and dried in a dessicator. Yield 1.36 g of 6-[(triphenylmethyl)thio]-1,3,3-hexanetricarboxylic acid (III) (−100%), 13C-NMR (MeOH) δ25.4, 29.2, 30.7, 33.5, 33.7, 58.0, 68.3, 128.1, 129.3, 131.2, 146.7, 174.9, 176.9.

1. customevaporated to dryness
2. dissolutiondissolved in water
3. customprecipitated by addition of 1 M sulfuric acid
4. filtrationThe precipitate was filtered off
5. washwashed with water
6. customdried in a dessicator