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Nomenclature of Carboxylic Acids

Which of the ...

Question

Which of the following compound on treatment with conc. aqueous alkali and on further acidification gives the following lactone?

A

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B

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C

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D

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Solution

The correct option is C

Step 1 is the intramolecular Cannizzaro reaction where a non-enolizable aldehyde disproportionates to a carboxylic acid and a primary alcohol under the influence of an alkali.

Step 2 is the intramolecular esterification to furnish a lactone.

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Q. Which of the following reactants on reaction with conc.

N a O H

followed by acidification gives following lactone as the main product?

Q. Which of the following reactants on reaction with conc. NaOH followed by acidification gives following lactone as the main product?

Given compound (A) upon treatment with

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(F) from the following is:

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Nomenclature of Carboxylic Acids

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