Question

Please use the E/Z notation when specifying stereochemistry remembering to use parentheses and a dash. Reminder - the double bond takes precedence over alkyl groups when numbering the parent. (E)-5-bromo-5-ethylhept-2-ene when combined with NaOCH2CH3.

Answer 1

(E)-5-ethylhepta-2,4-diene

Step-by-step explanation:

The (E)-5-bromo-5-ethylhept-2-ene will undergo an E2 reaction. The ethoxide (⁻OCH₂CH₃) will deprotonate at the allylic position so that a conjugated diene results, which is more stable than a non-conjugated diene.

The stereochemistry in the name of the final product is indicated for only one double bond since the other has two identical groups on it.