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Propionic acid with $\mathrm{Br}_2-\mathrm{P}$ yields a dibromo product. Its structure would be
Options:
- A $\mathrm{CH}_2 \mathrm{Br}-\mathrm{CHBr}-\mathrm{COOH}$
- B
- C $\mathrm{CH}_2 \mathrm{Br}-\mathrm{CH}_2-\mathrm{COBr}$
- D
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The correct answer is:
Key Idea $\mathrm{Br}_2$ in presence of $\mathrm{P}$ attacks on $\alpha$-carbon atom of acid and $\alpha$ hydrogen is substituted by bromine.
This reaction is called Hell-Volhard Zelinsky (HVZ) reduction.
This reaction is called Hell-Volhard Zelinsky (HVZ) reduction.
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