Reaction MechanismhardMCQ SINGLE⭐ Must-Do

When adds to a cis-alkene, the anti-addition mechanism results in which stereochemical product pair?Reaction Mechanism Chemistry Question

Question

When $Br_2$ adds to a cis-alkene, the anti-addition mechanism results in which stereochemical product pair?

Answer: B

💡 Solution & Explanation

The anti-addition of a symmetric reagent like $Br_2$ to a cis-alkene yields a threo pair, which is a racemic mixture of enantiomers.

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