2-Ethylpentan

On being heated with a solution of sodium ethoxide in ethanol compound A (CyHisBr) yielded a mixture of two alkenes B and C each having the molecular formula C7H14 Catalytic hydrogenation of the major isomer B or the minor isomer C gave only 3 ethylpentane Suggest structures for compounds A B and C consistent with these observations... 

Examine the energies of radicals resulting from hydrogen atom abstraction in 3-ethylpentane. Which radical is the lowest energy Is there a relationship between the CH bond lengths in 3-ethylpentane and the stabilities of the radicals resulting from bond dissociation Elaborate. 

Branching in PVC has been suggested as a possible source of instability for a long time. 2-methyl-2-chloro-propane and 3-ethyl-3-chloropentane are much less stable than the corresponding secondary chlorine compounds [31]. Comparison of 3-chloro-3-ethylpentane with 3-chloro-4-ethylhexane showed that the latter was by far the most stable [32]. Macromodels containing ter-... 

Anaerobic degradation of cycloalkanes has seldom been reported. The pathway used for the degradation of ethylcyclopentane by a sulfate-reducing enrichment is analogous to the fumarate pathway used for -alkanes (Part 1 of this chapter) with the formation of 3-ethylcyclopentanecar-boxylate followed by ring fission to 3-ethylpentan-l,5-dioate (Rios-Hamandez et al. 2003). 

Although the synthetic yields of hydrocarbon products obtained from the reduction of tertiary alkyl alcohols are frequently quite high, studies show that the reaction pathways taken by the reactants are not always as direct or straightforward as might be suggested by the structural relationships between reactants and products. For example, preparative-scale treatment of a dichloromethane solution of 3-ethylpentan-3-ol and triphenylsilane (1.2 equivalents) with excess trifluo-roacetic acid (1.5 M) at room temperature for 24 hours gives 3-ethylpentane in 78% yield (Eq. 14).127 Under these reaction conditions, the alcohol rapidly... 

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