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Substitution hydrocarbon-substituted peroxides

CHLP protocol, 147, 149, 150, 161, 165 hydrocarbon-substituted peroxides, 147, 149-50, 153-4 aromatic substituents, 150 peroxycarboxylic acids and derivatives, 160, 161... [Pg.1460]

The reaction often fails if the reactants, particularly the hydrocarbon, are purified to a high degree, and it has therefore been suggested that the mechanism of the reaction is one involving free radicals, on the assumption that purification of the hydrocarbon removed peroxide impurities. The substitution occurs most readily at a teriary carbon site and least easily at a primary carbon. Radical mechanisms were proposed by Soborovskii et al and later by Flurry and Boozer ". ... [Pg.76]

It is also used as a source material in the hydrocarbons to peroxides, ketones, and acids, preparation of inorganic bromides. Hydrogen In organic synthesis, hydrogen bromide is used bromide serves as a catalyst in alkylation reac- to substitute bromine for aliphatic chlorine in... [Pg.430]

Dialkyl peroxides have the stmctural formula R—OO—R/ where R and R are the same or different primary, secondary, or tertiary alkyl, cycloalkyl, and aralkyl hydrocarbon or hetero-substituted hydrocarbon radicals. Organomineral peroxides have the formulas R Q(OOR) and R QOOQR, where at least one of the peroxygens is bonded directly to the organo-substituted metal or metalloid, Q. Dialkyl peroxides include cyclic and bicycflc peroxides where the R and R groups are linked, eg, endoperoxides and derivatives of 1,2-dioxane. Also included are polymeric peroxides, which usually are called poly(alkylene peroxides) or alkylene—oxygen copolymers, and poly(organomineral peroxides) (44), where Q = As or Sb. [Pg.105]

TABLE 1. Enthalpies of formation of hydrocarbon-substituted hydroperoxides and peroxides (kJ mol )... [Pg.148]

Of the seven hydroxyl-containing peroxides listed in Table 2, six are rert-butylperoxy derivatives. Although the tert-butyl group kinetically stabilizes the peroxide so that its combustion enthalpy can be measured, its presence makes finding suitable reference compounds such as hydrocarbons and ethers to compare in reactions 2-9 more difficult. Reaction 6 is the only reaction for which there are enthalpy of formation data for the requisite comparison compounds. Three hydroxy peroxides, all from the same source26, have remarkably consistent enthalpies of reaction 6 in both the liquid and gas phases. The mean values derived from the vicinal-dioxygen substituted alcohols, 2-tert-butylperoxyethanol, 2-tert-pentylperoxyethanol and 3-terr-butylperoxy-1,2-propanediol, are —304.0 4.1 kJmol-1 (lq) and —257.1 6.0 kJmol-1 (g). However, these values... [Pg.155]


See other pages where Substitution hydrocarbon-substituted peroxides is mentioned: [Pg.145]    [Pg.147]    [Pg.1458]    [Pg.1459]    [Pg.1460]    [Pg.1460]    [Pg.1460]    [Pg.1465]    [Pg.1466]    [Pg.1490]    [Pg.1493]    [Pg.145]    [Pg.147]    [Pg.108]    [Pg.257]    [Pg.292]    [Pg.108]    [Pg.196]    [Pg.127]    [Pg.242]    [Pg.226]    [Pg.68]    [Pg.468]    [Pg.434]    [Pg.580]    [Pg.715]    [Pg.1256]    [Pg.41]    [Pg.580]    [Pg.715]    [Pg.1256]   


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