Key Idea Br2 in presence of P attacks on α-carbon atom of acid and α hydrogen is substituted by bromine. 
This reaction is called Hell-Volhard Zelinsky (HVZ) reduction.
Propionic acid with Br_2- P yields a dibromo product. Its structure would be
NEET UG 2009 — Chemistry Organic Chemistry
2009mcqeasy
Propionic acid with Br2−P yields a dibromo product. Its structure would be
Official previous-year question
Held on 30 Apr 2009 · Verified 9 Jul 2026.
Options
- A
CH2Br−CHBr−COOH
- B
- C
CH2Br−CH2−COBr
- D
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