Lithium Hydroxide → HCID 58277417, compound

Participants

Reaction Steps

3.60 g (8.72 mmol) of the compound of Example 27A are provided in 50 ml of 1,4-dioxane, 50 ml (50 mmol) of a 1N solution of lithium hydroxide in water are added, and the mixture is heated under reflux for 1 h. The mixture is concentrated, the residue is diluted with water, a conc. aqueous hydrogen chloride solution is subsequently added until the pH is acidic, the mixture is extracted with ethyl acetate, and the organic phase is dried over magnesium sulfate, filtered and concentrated. 3.30 g (98% of theory) of the title compound are obtained.

Provenance & Evidence