Electrophilic addition of in to *trans*-2-butene is a stereospecific reaction. What is the exact ste — Hydrocarbons Chemistry Question
Question
Electrophilic addition of $Br_2$ in $CCl_4$ to *trans*-2-butene is a stereospecific reaction. What is the exact stereochemical outcome?
Answer: A
💡 Solution & Explanation
Halogenation proceeds via a cyclic bromonium ion intermediate, enforcing strict anti-addition. Anti-addition to a symmetrical trans-alkene yields a meso compound (TAM rule: Trans-Anti-Meso).
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