Big Chemical Encyclopedia

Chemical substances, components, reactions, process design ...

Articles Figures Tables About

Sodium transition metal salts

The only directly accessible metal fulminates are those of mercury(II) and silver(I), very dangerously exposive solids obtained by the action of nitric acid and ethanol on the metals or their salts. Most modern preparations of fulminato complexes involve the conversion of a known amount of mercury fulminate into aqueous sodium fulminate by the action of sodium amalgam and ice-cold water the sodium fulminate solution is then allowed to react with the appropriate amount of a transition metal salt, and the resulting complex fulminato ion is precipitated as the salt of a large cation, most frequently Ph4As+ or R4N+ these are not explosive,4,35 Alkali and alkaline earth metal salts containing complex fulminato anions may be isolated from aqueous solutions, but they are reported to be as exposive as the binary silver and mercury fulminates, and are therefore usually avoided. [Pg.12]

Satoh, T., Suzuki, S., Suzuki, Y., Miyaji, Y., and Imai, Z., Reduction of organic compound with sodium borohydride-transition metal salt systems reduction of organic nitrile, nitro and amide compounds to primary amines, Tetrahedron Lett., 10, 4555 4558, 1969. [Pg.93]

Quinoxaline derivatives give, after reduction with sodium borohydride-transition-metal salt system, e.g. nickel(II) chloride, 1,2,3,4-tetrahydroquinoxaline derivatives. ... [Pg.251]

This can occur for reactions of transition metal salts with a main-group organometallic compound. For this type of reaction it s common to use the sodium salt Na CgHj) to deliver CjHj. [Pg.250]

Other epoxidizing reagents which have been proposed but have not been extensively employed with olefinic acids include r-butyl hydroperoxide and transition metal salts, hydrogen peroxide and isocyanate, sodium chlorate and osmium tetroxide, iodine and silver oxide and hydrogen peroxide and ortho esters. [Pg.460]

The (fulminato)metal complexes are prepared from aqueous sodium fulminate solutions and transition metal salts followed by addition of tetraphenylarsonium chloride [8]. The aqueous solutions of sodium fulminate can be directly prepared from MF and sodium amalgam in water [8]. [Pg.65]

The earliest mention of benzoic acid appears in the sixteenth century. The substance received its name from gum bezoin, the plant from whose resin it was first derived. This plant was for a long time the only source for this acid. In the nineteenth century, benzoic acid was synthesized from coal tar. Today it is manufactured by treating molten phthalic anhydride with steam in the presence of a zinc oxide catalyst, by the hydrolysis of benzo-trichloride, or by the oxidation of toluene with nitric acid or sodium dichromate or with air in the presence of a transition metal salt catalyst. The estimated global production capacity for this acid is about 600,000 tonnes per year. [Pg.170]


See other pages where Sodium transition metal salts is mentioned: [Pg.102]    [Pg.464]    [Pg.330]    [Pg.331]    [Pg.21]    [Pg.123]    [Pg.97]    [Pg.167]    [Pg.676]    [Pg.115]    [Pg.464]    [Pg.97]    [Pg.64]    [Pg.200]    [Pg.558]    [Pg.802]    [Pg.605]    [Pg.371]    [Pg.373]    [Pg.257]    [Pg.195]    [Pg.63]    [Pg.27]    [Pg.791]    [Pg.327]    [Pg.25]    [Pg.559]    [Pg.96]    [Pg.8864]    [Pg.560]    [Pg.297]    [Pg.2902]    [Pg.26]    [Pg.348]    [Pg.280]    [Pg.157]    [Pg.240]    [Pg.304]   


SEARCH



Metal sodium

Sodium borohydride + transition metal salts

Sodium metallation

Sodium, metallic

Transition metal salts

© 2024 chempedia.info