When considering substitution and/or elimination reactions involving tertiary ha

Question

When considering substitution and/or elimination reactions involving tertiary haloalkanes:

(A) reaction via SN1 and E1 mechanisms only is possible.

(B) a better nucleophile will increase the amount of substitution via an SN2 pathway.

(C) the concentration of the nucleophile effects the rate of reaction via substitution but would not affect the rate of elimination.

(D) reaction via SN1, E1 and E2 mechanisms is possible.

(E) elimination to the least substituted alkene is favoured by the E1 mechanism.

Explanation / Answer

Option A is correct since tertiary alkyl halides will undergo only either SN1 or E1 reactions since it gives more stable tertiary cation and it is possible only in the above cases.

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