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Sapling Learning Draw the expected major elimination product for the following E1 reaction.

Question:

Sapling Learning Draw the expected major elimination product for the following E1 reaction.

Elimination Reaction:

Elimination reaction is a reaction in which a saturated compound (single {eq}{\rm{C - C}} {/eq}bonds) is converted to an unsaturated compound (compounds having {eq}{\rm{C = C}} {/eq} bonds or {eq}{\rm{C}} \equiv {\rm{C}} {/eq} bonds).

Elimination reactions are of two types:

{eq}{\rm{E1}} {/eq} Reaction

{eq}{\rm{E2}} {/eq} Reaction

Answer and Explanation:


{eq}{\rm{E1}} {/eq} reaction is a unimolecular reaction which takes by two steps:

Ionization

Deprotonation

During ionization, carbocation is formed as an intermediate. In deprotonation step, removal of proton takes place from the carbocation in the presence of a base forming a pi-bond

The final product formed in {eq}{\rm{E1}} {/eq} reaction is an unsaturated compound.

The mechanism and final product formed in the reaction is given below:

In the first step, a carbocation is formed as an intermediate by the removal of leaving group (methyltosylate)

Then, the carbocation react with the base by the removal of hydrogen from the carbocation thereby forming {eq}{\rm{1,4,4 - trimethylcyclohex - 1 - ene}} {/eq} as the final product


So the expected major product for this {eq}{\rm{E1}} {/eq} reaction is .{eq}{\rm{1,4,4 - trimethylcyclohex - 1 - ene}} {/eq}


Learn more about this topic:

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Types of Reaction Mechanisms in Organic Chemistry

from College Chemistry: Help and Review

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