2,3-Dichloro-5,6-dicyano-1,4-benzoquinone → (4-Methoxyphenyl)(2-phenylnaphthalen-1-yl)methanone

Participants

Reaction Steps

To 30 ml. of dioxane were added 1.90 grams (5.58 mmoles) of 3-phenyl-4-(4-methoxybenzoyl)-1,2-dihydronaphthalene (prepared as in Example 3) and 2.00 grams (8.81 mmoles) of 2,3-dichloro-5,6-dicyano-1,4-benzoquinone. The resulting mixture was heated at reflux for twelve hours in a nitrogen atmosphere. The mixture then was cooled and evaporated to dryness. Water and ether were added to the residue. The ether layer was separated and washed 5 times with 20 ml. portions of 5 N sodium hydroxide and then with aqueous sodium chloride. The mixture then was dried over magnesium sulfate and evaporated to give 1.9 grams of substantially pure 1-(4-methoxybenzoyl)-2-phenylnaphthalene as a green oil.

Provenance & Evidence