HCID 54027195, compound → HCID 53931412, compound

Participants

Reaction Steps

6.1 g of the product from Example 25 were dissolved in a mixture of 150 ml of dioxane and 45 ml of 1.5 N sodium hydroxide solution. The solution was boiled under reflux overnight and the dioxane was then stripped off, the residue was diluted with 50 ml of water and the mixture was filtered. The filtrate was adjusted to pH 5 with dilute hydrochloric acid and was filtered off again after 10 minutes. Recrystallization of the residue from methanol gave the desired product in a yield of 72%.

Provenance & Evidence