Hydrochloric Acid → HCID 45261987, compound

Participants

Reaction Steps

The ester prepared in Example 3 (3.4 g, 8.3 mmol) was dissolved into ethanol (10 ml) and a 12 N sodium hydroxide solution (1.5 ml) was added. The reaction mixture was stirred at room temperature for 6 h. A concentrated hydrochloric acid solution (2.3 ml) was added with cooling of the reaction vessel in an ice-bath and dichloromethane (300 ml) was added. The resulting emulsion was dried over sodium sulphate and the solvent evaporated in vacuo to give a residue which was crystallised from ethyl acetate. This afforded 2.8 g (81% of the title compound.

Provenance & Evidence