Please explain the beta elimination?

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Please explain the beta elimination?

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Answer 1 · 2016-01-30T00:08:35

I actually don't think this is about beta decay.

$\mathbf(beta)$ -elimination is another name for second-order elimination, or $\mathbf(E2)$ , where, for example, a hydrogen on a $beta$ -carbon and the adjacent leaving group could be eliminated to generate a $pi$ bond.

An example one-step $"E2"$ reaction mechanism looks like this, where on the substrate, the proton is antiperiplanar to the leaving group $("Br")$ :

The proton was eliminated from the $beta$ -carbon, cleaving the $sp^2 "C"_(beta)-"H"$ and $sp^2 "C"_(alpha)-"Br"$ $sigma$ bonds, and generating an $sp^2 "C"_(alpha)="C"_(beta)$ $pi$ bond. Therefore, this might also be known as $beta$ -elimination.

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Please explain the beta elimination?

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