Question: The stereo selectivity of elimination of 5-bromononane on treatment with potassium ethoxide was described in Section 5.14. Draw Newman projections or make molecular models of

The stereo selectivity of elimination of 5-bromononane on treatment with potassium ethoxide was described in Section 5.14. Draw Newman projections or make molecular models of 5-bromononane showing the conformations that lead to cis-4-nonene and trans-4-nonene, respectively. Identify the proton that is lost in each case, and suggest a mechanistic explanation for the observed stereo selectivity.

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