Question

3 example: of reduction of aldehydes and ketones​

Answer 1

Answer:

* Aldehydes and ketones are most readily reduced with hydride reagents

* The reducing agents LiAlH4 and NaBH4 act as a source of 4 x H- (hydride ion)

* Overall 2 H atoms are added across the C=O to give H-C-O-H

* Hydride reacts with the carbonyl group, C=O, in aldehydes or ketones to give alcohols.

* The substituents on the carbonyl dictate the nature of the product alcohol.

* Reduction of  methanal (formaldehyde) gives methanol.

* Reduction of other aldehydes gives primary alcohols.

* Reduction of ketones gives secondary alcohols.

* The acidic work-up converts an intermediate metal alkoxide salt into the desired alcohol via a simple acid base reaction.

Answer 2

Answer:

Aldehydes and ketones are most readily reduced with hydride reagents

The reducing agents LiAlH4 and NaBH4 act as a source of 4 x H- (hydride ion)

Overall 2 H atoms are added across the C=O to give H-C-O-H

Hydride reacts with the carbonyl group, C=O, in aldehydes or ketones to give alcohols.

The substituents on the carbonyl dictate the nature of the product alcohol.

✓Reduction of methanal (formaldehyde) gives methanol.

✓Reduction of other aldehydes gives primary alcohols.

✓Reduction of ketones gives secondary alcohols.

The acidic work-up converts an intermediate metal alkoxide salt into the desired alcohol via a simple acid base reaction.

Explanation:

✓ is the examples in the above answer

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