HCID 18758233, compound → HCID 18758227, compound

Participants

Reaction Steps

A solution containing 1.60 g (4.1 mmol) of the compound obtained in Step A in 10 ml of methanol and 20 ml of 18% hydrochloric acid is refluxed for 4 hours. After returning to room temperature and removal of the methanol by evaporation, the mixture is neutralised with a saturated sodium hydrogen carbonate solution and then extracted with ethyl acetate. The organic phase is dried over magnesium sulphate, filtered and concentrated. The residue is purified by flash chromatography over silica gel (eluant: petroleum ether/ethyl acetate, 8:2) to yield the title compound in the form of a white solid.

Provenance & Evidence