Subjecting 1,2-dibromopropane to heat in the presence of zinc dust suspended in an alcohol solvent y — Reaction Mechanism Chemistry Question
Question
Subjecting 1,2-dibromopropane to heat in the presence of zinc dust suspended in an alcohol solvent yields propene. In mechanistic terms, this transformation is classified precisely as an example of:
Answer: B
💡 Solution & Explanation
The chemical removal of two halogen atoms from adjacent (vicinal) carbon atoms to form a new carbon-carbon double bond utilizing active metals like zinc or magnesium is a classic dehalogenation sequence. Mechanistically, because groups are removed from neighboring carbons, it is strictly classified as a 1,2-elimination (or $\beta$ -elimination).
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