6. Treatment of pent-4-en-1-ol with aqueous bromine yields a cyclic bromo-ether rather than the expected bromohydrin. Recall the mechanism of the halohydrin formation reaction, then use curved arrows to show how this intramolecular reaction happens.
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The double bond in pent-4-en-1-ol will attack one of the bromine atoms in Br2, forming a bromonium ion and a bromide ion. Show more…
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