The preparation of 5-nitroacenaphthene (2) using several nitrating agents resulted in a product which was found to be contaminated with 20-30% of the 3-nitro isomeride. Separation was accomplished by tlc and the nmr spectra of the isomers are now reported. A new synthesis of 4, 5-dinitronaphthalic anhydride (5) and an improved preparation of the dimethyl and diethyl esters of 4-nitronaphthalic anhydride and 5 is described. The esters ...
