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Explain the reaction mechanism of addition of HCN to benzaldehyde ? |
Answer» Solution :With pure HCN REACTION is very slow , THEREFORE it is catalysed ny base . Thus `CN^(-)`ION being a strong nucleophile adds to carbonyl GROUP`({:("\"),("/"):}C=O)` toto form an intermediate alkoxide.  The alkoxide ion FORMED is protonated by a week acid to GIVE an addition product cyanohydrin. 
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