6-Nitro-l, 4-naphthaquinune 4-oxime. While cooling to 5-lo", 5 g.(0.023 mole) of 1, 7- dinitronaphthalene was added slowly, with stirring, to 100 ml. of 30% oleum and the solution left 19 hr. on ice. It was then poured slowly onto 1 kg. of ice and the precipitate filtered and washed. The product was extracted a number of times with dilute sodium carbonate solution and filtered from some insoluble material. On acidifying the combined filtrates, the ...
