Pentyl radical, from decomposition

In principle, heavy radicals could undergo also H-abstraction, addition on unsaturated bonds and recombination reactions. It is quite easy to demonstrate how little relevance these reactions have compared with the isomerization and decomposition ones. This helps drastically reduce the total number of radicals and reactions to be considered. All of the intermediate alkyl radicals, higher than C4, are supposed to be instantaneously transformed into their final products. With reference to the primary products of Table III, the heavy radicals from pentyl up to octyl undergo direct isomerization and decomposition reactions to form smaller radicals and alkenes. Therefore, large sections of the kinetic scheme can be reduced to a few equivalent or lumped reactions whilst still maintaining a high level of accuracy. The complete kinetic scheme shown in Fig. 2 can be then simply reduced to this single, equivalent or lumped reaction ... 

The analysis of the primary decomposition products from the decomposition of methyl-cyc/o-pentane requires the addition of only a few reactions to the scheme shown in Fig. 6. Three methyl-cyc/o-pentyl radicals were already formed from the successive isomerization reactions of cyc/o-hexy 1-radical, and thus only the tertiary radical, with its isomerization and decomposition reactions to form methyl-allyl radical and ethylene, needs to be included... 

C5H11O. D6W et al. (1986) studied the decomposition of 2-pentoxyl radicals obtained from the pyrolysis of 2-pentyl peroxide. 

The isomerization of 2-pentoxyl radicals was studied by D6b6 et al. (1986), who prepared the radical, either by pyrolysis or photolysis of 2-pentyl peroxide or by photolysis of 2-pentyl nitrite. The isomerization reaction was studied in competition with the decomposition reaction, which was measured independently in the same study. The isomerized radical was trapped by addition of CH3 radicals to give 2-hexanol. From 279 to 385 K, one has log ifciia/I ,if = 0-1 0.2) -I-(4.0 0.4)/0 where reaction 11a is... 

Thieno[3,2-6]thiophen and thieno[2,3-Z>]thiophen have been phenylated with phenyl radicals derived from the thermal decomposition of W-nitroso-acetanilide and from the reaction of aniline and pentyl nitrite. Radical substitution occurs predominantly in the 2-position in the [3,2-6]-compound, whereas about equal amounts of 2- and 3-substitution are obtained for the... 

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