Dimethyl Sulfoxide → HCID 14150485, compound

Participants

Reaction Steps

21 g (0.1 mol) of 1,4-dihydroxy-2,3-dicyanonaphthalene, 100 ml of dimethyl sulfoxide and 38.5 g (0.25 mol) of diethyl sulfate were introduced at room temperature as the initial charge. 38.6 g (0.28 mol) of potassium carbonate were added with stirring. The batch was then stirred at 100° C. for 10 h and thereafter poured onto ice-water, and the resulting precipitate was washed with water and dried to leave 23.3 g of 1,4-diethoxy-2,3-dicyanonaphthalene (theory: 87%; melting point: 167° C.).

Provenance & Evidence