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  4. Benzaldehyde on treatment with ethanolic KCN produce:

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Q. Benzaldehyde on treatment with ethanolic KCN produce:

Bihar CECEBihar CECE 2002Aldehydes Ketones and Carboxylic Acids

Solution:

When 2 molecules of aromatic aldehydes condense in presence of alc. KCN, it is called benzoin condensation
$\underset{\text{benzaldehyde}}{2C_{6}H_{5}CHO} \xrightarrow{{KCN(alc)}} \underset{\text{benzoin}}{C_{6}H_{5}CHOH - CO - C_{6}H_{5}}$