Water → HCID 178523111, compound

Participants

Reaction Steps

Under an inert atmosphere, 582 mg (4.36 mmol) of aluminium chloride are added to a solution of 350 mg (0.87 mmol) of the compound of Example 11 in 15 ml of dichloromethane. The reaction mixture is refluxed for 6 hours before being hydrolysed with water. The aqueous phase is neutralised with a sodium hydrogen carbonate solution and extracted with dichloromethane. After drying over magnesium sulphate and removal of the solvents by evaporation, the residue is purified by flash chromatography over silica gel (eluant:ethyl acetate/methanol, 95:5) and then by washing with a hexane/diethyl ether mixture to yield the title compound in the form of a white solid.

Provenance & Evidence