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Haitinger,1 by treating isobutylene, isoamylene and tertiary butyl and amyl alcohols with absolute nitric acid, obtained (CH3)2C=CHN02 and (CH3)2C=C(N02) CH3 in small yields, mainly, however, products of oxidation; with ethylene only oxidation products were formed. However, by using a mixture of nitric and fuming sulfuric acids, Wieland and Sakellarios2 succeeded in isolating CH2(0N02)CH2N02 from the reaction products with ethylene, but with much oxidation product. The investigation was extended by Wieland and Rahn3 to isoamylene, which with absolute nitric acid alone gave only resinous products, but when diluted with carbon tetrachloride, gave some of Haitinger's nitroamylene along with (CH3)2C(0N02)CH(N02)CH3. Similarly, (CeH6) 2C (OH) CH2N02 was obtained from a, -diphenylethylene and from phenanthrene the ether of 8-hydroxy-9-nitrophenanthrene. Upon these results Wieland based an interpretation of the nitration mechanism; accordingly, nitric acid does not function as an electrolyte in addition to ethylene groups, but as HO + N024 forming primarily the corresponding satu-

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