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Provide the structure of the BEST alkyl halide substrate to start with if you hope to obtain each of

the following products as the MAJOR elimination product:

Provide the structure of the BEST alkyl halide substrate to start with if you hope-example-1

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(a). Methylene cyclopentane (P1) is the major product of the elimination reaction of cyclopentylmethyl bromide (S1) in the presence of strong base.

(b). 3,5-dimethylcyclohexene (P2) is the major product of the elimination reaction of 3,5-dimethylcyclohexylbromide (S2) in the presence of strong base.
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