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Discuss the following reactions : (i) HVZ reaction. (ii) Decarboxylation reaction. |
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Answer» Solution :(i) HVZ reaction. The reaction of an aliphalic carboxylic acid containing `alpha`-H-atoms with `Cl_(2) // Br_(2)` in the presence of a small amount of P to give `alpha`-HALO acid is called HVZ reaction. e.g., `CH_(3)COOH underset(-HCl)overset(P, Cl_(2))to underset(Cl)underset(|)CH_(2)-COOH underset(-HCl)overset(Cl_(2), P)to CHCl_(2)-COOH-HCl underset(-HCl)overset(Cl_(2), PC Cl_(3))to -COOH` (ii) Decarboxylation reaction. The process of REMOVAL of `CO_(2)` from a carboxylic acid is called decarboxylation reaction e.g., `CH_(3)COONa+NaOH^(-) underset(Delta)overset(CaO)to CH_(4)+Na_(2)CO_(3)` |
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