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JEE Main levelSingle correct optionDifficulty 2 of 3el074

Heroin is obtained from morphine by

  1. Aacetylation of both hydroxyl groups with acetic anhydride
  2. Bmethylation of the phenolic hydroxyl group
  3. Chydrolysis of an ester group
  4. Dreduction of the aromatic ring

Answer: A

Heroin is diacetylmorphine, formed when both -OH groups of morphine are acetylated. Methylation of only the phenolic -OH gives codeine.
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