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P-Nitrobenzenesulfonyl peroxide

Electron-donating substituents make the aromatic subsU ate more reactive than benzene and lead to o,/ -orientation, while electron-withdrawing substituents decrease the reactivity and give mostly m-orientation products. The detailed mechanism of the formation of the a complex has been studied by oxygen-18 labeling of the sulfonyl oxygen in p-nitrobenzenesulfonyl peroxide. The ionic mechanism for aromatic substitution by sulfonyl peroxides has been confirmed by carrying out the substitution reaction in the presence of redox catalysts such as copper and cobalt salts and aluminum chloride. Small differences in the rate of the products can be found in the presence or absence of these additives, and it has been concluded that the ionic mechanism accounts satisfactorily for these results. ... [Pg.1006]

Yoshida and coworkers47 reported that they readily oxidized bromide and chloride anions into positive halogens with p-nitrobenzenesulfonyl peroxide (equation 26). They found that oxyhalogenated products were formed from the reaction of these positive halogens with olefins, and proposed epihalonium ion intermediates which, in turn, were trapped by oxygen nucleophiles inter- or intramolecularly to afford the oxyhalogenated products (equation 27). [Pg.1134]

Aromatic aldehydes are obtained by reaction of primary amines with p-nitrobenzenesulfonyl peroxide followed by mild hydrolysis with dilute acid. ... [Pg.229]

A migration of an aryl group from carbon to nitrogen takes place also in the Stieglitz rearrangement. For example, the benzylamine derivatives 234 were converted into anils 235 in a reaction induced by p-nitrobenzenesulfonyl peroxide (p-NBSP)337 (equation 94). [Pg.628]

Related Reagents. Copper(II) Methanesulfonate Copper(II) Nitrobenzenesulfonate Thallium(III) Toluenesulfonate. Indirect a-Sulfonyloxylation has been achieved using Koser s reagent and related derivatives p-Nitrobenzenesulfonyl Peroxide other related reagents. ... [Pg.158]

The peroxide is prepared by oxidation of p-nitrobenzenesulfonyl chloride with 307 H2O2 (C2H5OH. H2O, KzCOo) yield, 40%. [Pg.376]

See other pages where P-Nitrobenzenesulfonyl peroxide is mentioned: [Pg.1006]    [Pg.1006]    [Pg.218]    [Pg.410]    [Pg.244]    [Pg.360]    [Pg.360]    [Pg.1006]    [Pg.1006]    [Pg.218]    [Pg.410]    [Pg.244]    [Pg.360]    [Pg.360]    [Pg.1006]    [Pg.218]   
See also in sourсe #XX -- [ Pg.218 ]



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P-Nitrobenzenesulfonyl

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