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Benzaldehyde reacts with alcoholic KCN t...

Benzaldehyde reacts with alcoholic KCN to give :

A

`C_(6)H_(5)CH(OH)CN`

B

`C_(6)H_(5)CH(OH)COC_(6)H_(5)`

C

`C_(6)H_(5)CH(OH)COOH`

D

`C_(6)H_(5)CH(OH)CH(OH)C_(6)H_(5)`

Text Solution

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The correct Answer is:
To solve the question, "Benzaldehyde reacts with alcoholic KCN to give:", we will follow these steps: ### Step 1: Identify the Reactants Benzaldehyde (C6H5CHO) is the starting material, and it reacts with alcoholic potassium cyanide (KCN). ### Step 2: Understand the Reaction Mechanism When benzaldehyde reacts with KCN in alcoholic conditions, it undergoes a reaction known as the benzoin condensation. This reaction involves the nucleophilic addition of the cyanide ion (CN-) to the carbonyl carbon of benzaldehyde. ### Step 3: Formation of Benzoin The reaction leads to the formation of benzoin, which is a hydroxyketone. The structure of benzoin can be represented as: - C6H5-CHOH-CO-C6H5 This structure consists of a hydroxyl group (OH) and a ketone (C=O) functional group. ### Step 4: Identify the Product The product of the reaction is benzoin, which can be represented as: - C6H5-CHOH-CO-C6H5 ### Step 5: Conclusion Thus, the final answer to the question is that benzaldehyde reacts with alcoholic KCN to give benzoin. ### Final Answer The product formed is Benzoin (C6H5-CHOH-CO-C6H5). ---
To solve the question, "Benzaldehyde reacts with alcoholic KCN to give:", we will follow these steps: ### Step 1: Identify the Reactants Benzaldehyde (C6H5CHO) is the starting material, and it reacts with alcoholic potassium cyanide (KCN). ### Step 2: Understand the Reaction Mechanism When benzaldehyde reacts with KCN in alcoholic conditions, it undergoes a reaction known as the benzoin condensation. This reaction involves the nucleophilic addition of the cyanide ion (CN-) to the carbonyl carbon of benzaldehyde. ...
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