Hydrochloric Acid → HCID 70020134, compound

Participants

Reaction Conditions

Reaction Steps

5.2 cm3 of a solution of magnesium compound (0.42 M/l) prepared from the product obtained in Stage A and 2.3 cm3 of tetrahydrofuran is cooled down to 0°/+2° C. 30 mg of copper chloride is added, agitation is carried out for 30 minutes, followed by cooling down to −30° C. and 330 mg of 3-ethylenedioxy 5 (10-epoxy estr-9(11)-ene-17-one dissolved in 2 cm3 of tetrahydrofuran is added and agitation is carried out for 45 minutes. 6 cm3 of 2M hydrochloric acid is added and agitation is carried out for 2 hours at ambient temperature. The reaction medium is poured into a saturated aqueous solution of sodium bicarbonate, followed by extraction with ethyl acetate, washing with salt water, drying and evaporating the solvent. After chromatographing the residue on silica (eluant: ethyl acetate-cyclohexane 6-4), 192 mg of expected product is obtained.

Provenance & Evidence