Acetic Acid → HCID 23150364, compound

Participants

Reaction Steps

34.3 g (94 mmol) of 2,7-dibromophenanthrene-9,10-quinone were suspended in 600 ml of dry THF at −10° C. under argon, and 141 ml (282 mmol) of methylmagnesium chloride (2 molar solution in THF) were added dropwise at such a rate that the internal temperature did not exceed 0° C. The mixture was subsequently stirred overnight at room temperature. 50 ml of glacial acetic acid were added to the batch with ice cooling, and the mixture was diluted with ethyl acetate. After washing twice with saturated sodium chloride solution, the mixture was dried over sodium sulfate, and the solvents were removed, giving 43.4 g of the product, which was employed without further purification for the next step.

Provenance & Evidence