Hydrazines hydrazoic acid

HYDROXYLAMINE, HYDRAZINE, HYDRAZOIC ACID Methyl Amines... 

Heterocycles Acetylacetone. N-Aminophthalimide. Boron trichloride. Dichloro-formoxime. Oicyanodiamide. Dicyclohexylcarbodiimide. Dietboxymethyl acetate. Diethyl oxalate. Diketene. Dimethylformaniide diethylacetal. Diphenyldiazomethene. Ethyl ethoxy-methylenecyanoacetate. Formaldehyde. Formamide. Formamidine acetate. Formic acid. Glyoxal. Hydrazine. Hydrazoic acid. Hydroxylamine. Hydroxylamine-O-sulfonic acid. Methyl vinyl ketone. o-Phenylenediamine. Phenylhydrazine. Phosphorus pentasullide. Piperidine. Folyphosphoric acid. Potassium diazomethanedisulfonate. Sodium ethoxide. Sodium nitrite. Sodium thiocyanate. Tetracyanoethylene. Thiosemicarbozide. Thiourea. Triethyl orthoformate. Tris-formaminomethane. Trityl perchlorate. Urea. Vinyl triphenyl-phosphonium bromide. 

Hydrazoic acid has no resemblance to either ammonia or hydrazine. 

Reductions. Hydrazine is a very strong reducing agent. In the presence of oxygen and peroxides, it yields primarily nitrogen and water with more or less ammonia and hydrazoic acid [7782-79-8]. Based on standard electrode potentials, hydrazine in alkaline solution is a stronger reductant than sulfite but weaker than hypophosphite in acid solution, it falls between and Ti ( 7). 

Aluminum chloride [7446-70-0] is a useful catalyst in the reaction of aromatic amines with ethyleneknine (76). SoHd catalysts promote the reaction of ethyleneknine with ammonia in the gas phase to give ethylenediamine (77). Not only ammonia and amines, but also hydrazine [302-01-2] (78), hydrazoic acid [7782-79-8] (79—82), alkyl azidoformates (83), and acid amides, eg, sulfonamides (84) or 2,4-dioxopyrimidines (85), have been used as ring-opening reagents for ethyleneknine with nitrogen being the nucleophilic center (1). The 2-oxopiperazine skeleton has been synthesized from a-amino acid esters and ethyleneknine (86—89). 

Silver Azide. Silver a2ide, AgN, is prepared by treating an aqueous solution of silver nitrate with hydrazine (qv) or hydrazoic acid. It is shock-sensitive and decomposes violendy when heated. 

Hydrazine, bis(allylthiocarbamido)-in gravimetry, 1, 534 liquid-liquid extraction, 1,546 Hydrazines, 2, 101 macrocyclic synthesis, 2,904 metal complexes, 2, 30 in plutonium extraction, 6, 948 Hydrazoic acid... 

Hydrazine hydrate, 50, 3 Hydrazoic acid, safe substitute for, 50, 107 HYDRAZONES, PREPARATION, 50,... 

Ethyl diazoacetate, discovered in the year 1888 by T. Curtius, was the precursor of hydrazine and hydrazoic acid. 

Types of compounds are arranged according to the following system hydrocarbons and basic heterocycles hydroxy compounds and their ethers mercapto compounds, sulfides, disulfides, sulfoxides and sulfones, sulfenic, sulfinic and sulfonic acids and their derivatives amines, hydroxylamines, hydrazines, hydrazo and azo compounds carbonyl compounds and their functional derivatives carboxylic acids and their functional derivatives and organometallics. In each chapter, halogen, nitroso, nitro, diazo and azido compounds follow the parent compounds as their substitution derivatives. More detail is indicated in the table of contents. In polyfunctional derivatives reduction of a particular function is mentioned in the place of the highest functionality. Reduction of acrylic acid, for example, is described in the chapter on acids rather than functionalized ethylene, and reduction of ethyl acetoacetate is discussed in the chapter on esters rather than in the chapter on ketones. 

Hydrazoic acid is prepared by reacting sulfuric acid with sodium azide H2SO4 + NaNs — HN3 -I- Na2S04 or by treating hydrazine with nitrous acid ... 

Hydrazine is used for the preparation of hydrazoic acid according to ... 

Hydrogen Azide (hydrazoic acid, azoimide, hydro-nitric acid, triazoic acid) HN N N Diimino-Hydrazine HN N.NH.NrNH Bisdiazoamine HN N.NH.N NH Hexazodiazene.HN N.NH.NH. N NH Heptazodiazene H2N.N N.NH.N N.NH2 Type formula NnHn ... 

Hydrazoic acid also reacts with copper, silver and mercury but in a different way it forms azides without loss of hydrogen and a considerable amount of hydrazoic acid is reduced to ammonia or hydrazine and free nitrogen. The reaction with copper recalls the action of nitric acid on this metal. 

There are two methods for the manufacture of hydrazoic acid or its salts. One is derived from a number of investigations by Curtius [1] and is based on the action of nitrous acid on hydrazine ... 

Reaction (6) is particularly well suited for use in the preparation of the organic derivatives of hydrazoic acid from the corresponding derivatives of hydrazine. Nitrous esters may be employed, instead of the acid, e.g. ethyl nitrite in the presence of sodium hydroxide... 

The formation of hydrazoic acid and its derivatives together with ammonia from diazo compounds under the influence of hydrazine or its derivatives was explained by Thiele [68]. At an intermediate stage a diazohydrazine, e.g. C6H5N2NHNH2, is formed which then undergoes decomposition according to two parallel reactions ... 

Azides Trinitrides or Triazoates (formerly called Azoimides) are the salts of hydra-zoic acid, HN. This acid is a little stronger than acetic acid. The -N, radical in HN) resembles the chloride ion (Cl ) in its chemical behavior. Hydrazoic acid was first prepd by Curtius (Ref 1) by the reaction of nitrous acid with hydrazine. For addnl info see Hydrazoic Acid. Azides may be divided into two main classes inorganic and organic. 

Hydrazine Azide (formerly called Hydrazine Azoimide,Hydrazine Trinitride or Hydrazonium Azide) (called by Curtius Diammonium Azide, N,H ), NaH, HN, mw 75.08, N93.29% rhmb, hygr crysts mp 75.4(Ref 6) v sol in w, sol in hydrazine(190% at 23 ), methanol (6.1% at 23°) and in ale (1.2% at 23°C), not appreciably sol in chlf, carbon tetrachloride benz, carbon disulfide, ethyl acetate or diethyl ether (Ref 6). First prepd by Curtius in I89I (Ref 1) by neutralizing hydrazoic acid with hydrazine... 

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