Nitrocompounds salts

CIANOGUANIDINA (Spanish) (461-58-5) Mixtures with many compounds form explosive compounds, including strong oxidizers, diazo, nitrocompounds, salts of diazonium or hydrazinium, azides, tetrazenes, tetrazoles, triazenes, and triazoles. Reacts with strong acids, forming hydrogen cyanide. 

The characteristic property of aliphatic nitrocompounds of the type RCHiKOj and RjCHNO, is that they are pseiido cids, I. e., whereas they are neutral in the normal form (A), they are able by tautomeric change under the influence of alkali to give the acidic hydroxy form (B) which thus in turn gives the sodium salt (C). When this sodium salt is treated with one equivalent of hydrochloric acid, the acid form (B) is at once regenerated, and then more slowly reverts to the more stable normal form (A). 

As stated above under TNMe, in Ger during WWII, the prepn of TeNMe by this process was scaled up for use as an intermediate and as a substitute for nitric acid in the V-2 rocket (Ref 26). A pilot plant was built at Newark, NJ for prodn using this procedure. It was destroyed by an expln in 1953 and not rebuilt (Refs 33 44). Other prepns of lesser importance are by the action of Ag nitrite on iodotrinitro-methane (Ref 3) by the action of 90% nitric acid and 25% oleum on malononitrile, yield 45% (Ref 40) by the action of mixed acid on a number of aromatic nitrocompounds, of which nitrobenzene, dinitrobenzene, and nitronaphtha-lene gave the best yields (Ref 13a) and by the action of nitryl chloride on salts of TNMe. 

Lead Salts of Nitrocompounds. Hopper (Ref), at PicArsn, prepd and characterized Pb dinitro-resorcinate, Pb dinitrophenolate, and Pb di-nitrophthalate as possible substitutes for MF in priming compns. Only the dinitroresorcinate... 

Alkalies, Action on Aliphatic Nitrocompounds. Compds with hydrogen atoms attached to a primary or secondary carbon atom linked to an NO, group show weakly acid properties. Such compds dissolve or react slowly in strong alkalies to form salts. This formation of salts is usually comparatively slow. 

Nitromalonic Acid.—According to Ulpiani and Gasparini,1 a hydro-alcoholic solution of nitromalonic ethyl ester does not conduct the current, but an aqueous solution of the ammonium salt does. According to this the ester appears as a true nitrocompound ... 

The most important applications of peroxyacetic acid are the epoxi-dation [250, 251, 252, 254, 257, 258] and anti hydroxylation of double bonds [241, 252, the Dakin reaction of aldehydes [259, the Baeyer-Villiger reaction of ketones [148, 254, 258, 260, 261, 262] the oxidation of primary amines to nitroso [iJi] or nitrocompounds [253], of tertiary amines to amine oxides [i58, 263], of sulfides to sulfoxides and sulfones [264, 265], and of iodo compounds to iodoso or iodoxy compounds [266, 267] the degradation of alkynes [268] and diketones [269, 270, 271] to carboxylic acids and the oxidative opening of aromatic rings to aromatic dicarboxylic acids [256, 272, 271, 272,273, 274]. Occasionally, peroxyacetic acid is used for the dehydrogenation [275] and oxidation of aromatic compounds to quinones [249], of alcohols to ketones [276], of aldehyde acetals to carboxylic acids [277], and of lactams to imides [225,255]. The last two reactions are carried out in the presence of manganese salts. The oxidation of alcohols to ketones is catalyzed by chromium trioxide, and the role of peroxyacetic acid is to reoxidize the trivalent chromium [276]. 

Reaction of nitromethane with pyhlium salts. Dimroth 62) in a number of papers since 1956 63] has described an interesting reaction in the formation of aromatic nitrocompounds by reacting nitromethane with pyrilium salts (e.g. perchlorate) substituted in positions 2.4,6 in basic medium (7) with a yield varying from 25 to 607o ... 

Methods for Preparing Energetic Nitrocompounds Nitration with Superacid Systems, Nitronium Salts, and Related Complexes George A. Olah... 

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