Sodium Hydroxide → HCID 15077916, compound

Participants

Reaction Steps

To a solution of intermediate j (5 g, 0.013 mol) dissolved in ethylalcohol (50 ml, 10 v/w) was added 1N NaOH aq (100 ml). The mixture was stirred at room temperature for 3 h. After completion of the reaction, the solvent was evaporated in vacuo, and the residue was poured into water (50 ml) and extracted with CH2Cl2 (150 mL*4). Then the aqueous layer was separated and acidified to pH 6 with 6N aqueous hydrochloric acid, then stirred at room temperature for 0.5 h, and the precipitate was filtered to give white solid 2.8 g. Yield: 60%.

Provenance & Evidence