Argentous oxide

Chemical Dedgnatioiis - Synonyms Argentous oxide Chemical Formula AgjO. 

Formula Ag20 MW 231.74 Synonyms silver oxide argentous oxide... 

Synonyms silver peroxide argentic oxide silver suboxide Divasil... 

By the action of argentic oxide, oxj gen is evolved from both compounds —... 

Argentic oxide is formed by precipitating argentic nitrate with a solution of bmno hydrate, and drying the precipitate, which is probably argentic hydrate, AgHo. This is the salifl able oxide of vor. 

Ketones, unlike aldehydes, do not oxidise spontaneously neither do they reduce atmnoniacal solution of argentic oxide. 

Argentous Fluoride Argentous Oxide Arochlor Arsecodile... 

Synonyms Argentous oxide silver (1+) oxide disilver oxide silver oxi de Windholz 1983... 

Silver (II) oxide Argentic oxide silver peroxide silver suboxide di vsai1 No data AgO... 

The argentic oxide catalyst may also be activated by the addition of a small amount of cobaltic oxide, CO2O3, about 0.2% of cobalt being effective for this purpose. However, cobalt activated preparations are not very stable, readily lose oxygen on storage, and absorb CO2. With... 

Argentic oxide, AgO.—A hot alkaline solution of potassium permanganate partially oxidizes silver monoxide to argentic oxide 13... 

PROP Brownish-black, heavy, odorless powder. Light sensitive. D 7.22 25°/4°. Decomp at approx 200°. Yery sol in dilute nitric acid, ammonia less sol in NaOH solns insol in ale. IDLH 10 mg/m (as Ag). SYNS ARGENTOUS OXIDE DISILVER OXIDE... 

Silver oxide (argentous oxide), Ag20, is a brown-black powder. It is available commercially or can be prepared by treatment of a solution of silver nitrate with a solution of potassium hydroxide. The resulting precipitate is decanted and washed with distilled water until no nitrate ions... 

Argentic oxide, AgO, which is prepared by the electrolysis of silver nitrate in nitric acid [379], converts aromatic methyl homologues into aldehydes [380], primary alcohols into aldehydes [380] or acids [381], aldehydes into acids [382], primary amines into aldehydes and nitriles [381], and phosphines into phosphine oxides [38i]. 

Methyl homologues of aromatic compounds are oxidized to aldehydes by silver(II) oxide (argentic oxide) [380], by ceric ammonium nitrate [238, 417, 422], by selenium dioxide [513, 514, 5i5], by chromyl chloride [477, 667], by periodic acid [760], and by manganese dioxide [1127] (equation 169). 

Ethylbenzene is converted into acetophenone by argentic oxide [380], by ceric ammonium nitrate [417], and by other oxidants (equation 175). 

Indane is oxidized to 1-indanone and tetralin is converted into 1-tetralone by mercuric bromide under irradiation [ii] or by argentic oxide [380] (equation 179). 

Both aliphatic and aromatic alcohols, as well a s unsaturated alcohols, are oxidized in the liquid phase with argentic oxide in nitric or acetic acid at temperatures from -10 through 60 °C [5S6]. 

Aldehydes are also oxidized to carboxylic acids in high yields by argentic oxide at room temperature in aqueous tetrahydrofuran. However,... 

A somewhat similar oxidation takes place when an aldehyde is treated with sodium cyanide and manganese dioxide or argentic oxide [382], The reaction is assumed to proceed through a cyanohydrin, which is oxidized to an a-keto nitrile. The a-keto nitrile in turn is converted into an acid (by argentic oxide in methanol) or an ester (by manganese dioxide in methanol). The method is especially suited for a, -unsaturated aldehydes [382] (equation 354). 

More intensive dehydrogenation of primary amines having two hydrogen atoms on the adjacent carbons leads to nitriles. Such dehydrogenations are accomplished by argentic oxide cobalt peroxide [1136], nickel peroxide [936], lead tetraacetate [443, 444], sodium hypochlorite [692], potassium ferricyanide [924], and potassium ruthenate [196] (equation 513). 

Like tertiary amines, tertiary phosphines are readily transformed into the corresponding oxides, phosphine oxides. Tributylphosphine in di-chloromethane is oxidized with ozone adsorbed on silica gel at -70 "C to tributylphosphine oxide in 92% yield [113]. Other oxidants used to transform phosphines into phosphine oxides are potassium peroxysulfate [205], argentic oxide [381 ], manganese dioxide [813], and barium manganate [S55] (equation 537). 

A similar oxidation of trivalent phosphorus to pentavalent phosphorus occurs in trialkyl or triaryl phosphites. Triphenyl phosphite is converted by ozone in dichloromethane at 5-10 C into triphenyl phosphate in 95% yield [775] and by argentic oxide in 30% yield [557] (equation 538). 

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