2,3-Dichloro-5,6-dicyano-1,4-benzoquinone → HCID 9842206, compound

Participants

Reaction Steps

To 11.1 g (30 mmol) of 1-phenyl-2-(4-methoxybenzoyl)-3,4-dihydro-6-methoxynaphthalene dissolved in benzene was added DDQ (9 g, 40 mmol). The mixture was heated to reflux for two hours and filtered while hot through silica gel. The silica gel was washed three times with ethyl acetate. The ethyl acetate washings and the benzene solution were combined and evaporated to dryness. The residue was crystallized from hot methanol, which yielded 4.5 g of the title compound.

Provenance & Evidence