Ammonium nitrate oxidant

Figure 1. Heat developed as a function of reactant ratio for ceric ammonium nitrate oxidation in ethanol of ethyl 10-ethoxydecanoate-10-hydroperoxide...

A family of high performance and clean space motor/gas generators and large launch vehicle solid propellants based on poly(GlyN) binder, ammonium nitrate oxidizer and small amounts of aluminum and/or boron with optimized performance at low solids loading (without the presence of plasticizers) and also poly(GlyN) binder, ammonium nitrate oxidizer and aluminum or magnesium fuel have been reported in the literature [141, 142]. These solid propellant formulations produce essentially no HC1 or chloride ions in the exhaust and are considered eco-friendly. 

Cava and coworkers demonstrated that ceric ammonium nitrate oxidation of 4,6,7-trimethoxytryptamines, followed by cyclization, can efficiently generate the pyrrolo[4,3,2-de]quinoline nucleus which forms the heterocyclic core of a group of marine alkaloids which includes the makaluvamines and discorhabins. <95JOC 1800> Previous studies in this area have shown that the methoxy group can subsequently be replaced by amines to provide the natural substances. 

Oxidation of these complexes releases the apical carbon atom and its substituent in the form of an organic derivative.2 Thus ceric ammonium nitrate oxidation of an RCCo3(CO)9 complex produces the carboxylic acid, RC02H, when the reaction is carried out in aqueous acetone. Thermolysis of RCCo3(CO)9 produces acetylenes or acetylene hexacarbonyl dicobalt complexes, depending on the reaction conditions. Useful applications of these cluster complexes in organic synthesis remain to be developed. 

Oxidation of diaryl u fidesJ Ceric ammonium nitrate oxidizes diaryl sulfides in high yield to the corresponding sulfoxides without ovcroxidalion to sulfoncs. The... 

Another dicarboxylic peroxy acid, peroxyphthalic acid, is used for the Baeyer-Villiger reaction of p-diketones and a-keto esters [334]. Besides peroxy acids, ceric ammonium nitrate oxidizes 2-adamantanone to 2-oxa-homoadamantanone in aqueous acetonitrile in 73% yield at 60 °C after 3 h [422]. Tetracyclone (2,3,4,5-tetraphenyl-2,4-cyclopentadien-l-one) is oxidized by ceric ammonium nitrate in aqueous acetonitrile to tetraphenyl-2-pyrone in 77% yield [422]. 

Preparation of a-fluoro ketones or aldehydes can also be achieved by cerium ammonium nitrate oxidation of the corresponding silyl nitronates. C-acylation compounds derived from nitroalkanes can be... 

Cerium ammonium nitrate oxidation of camphorquinone gives (201 X = C02Me) as the major product along with the exo-double-bond isomer, methyl 3-methoxy-2,2,3-trimethylcyclopentane-l-carboxylate, and dimethyl camphor ate. 

Polyethers are readily accessible by tandem radical cyclizations. For example, bis-allylether 480a,b reacts with a trimethyl tin radical and then undergoes a sequential radical cyclization to provide 481a,b in 86 and 85% yield, respectively (equation (13)) (92JA3115). A ceric ammonium nitrate oxidation of 481 was carried out in methanol and converted the stannyl moiety into the corresponding dimethylacetal. 

Production of singlet oxygen (both Eg and Ag) by selfreaction of s-butylperoxy radicals and the peroxy radicals derived from linoleic acid has very recently been confirmed by analysis of the emission spectra observed during ceric ammonium nitrate oxidation of the. appropriate hydroperoxide ( 8). 

Benzyne intermediates are probably involved in the ring-closure of 2-(or 3-) chloro-2 -(methylthio)benzophenones to thioxanthones. Xanthones were prepared analogously. Syntheses of several pharmacologically useful thioxan-thene derivatives have been described. Ceric ammonium nitrate oxidizes thioxanthene to thioxanthone. ... 

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