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p- cresol reacts with chloroform in alkaline medium to give the compound A which adds hydrogen cyanide to form the compound B. The latter on acidic hydrolysis gives chiral carboxylic acid. The structure of the carboxylic acid is

  • Option 1)

  • Option 2)

  • Option 3)

  • Option 4)


Answers (1)


As we learnt in

Hydrolysis of Trihalogen derivatives -

Three halogen atoms are attached to the same carbon atom yield carboxylic acid. 

- wherein

RCX_{3}+3KOH\rightarrow RCOOH+3KX+H_{2}O


 fig. 7

Option 1)

This option is incorrect.

Option 2)

This option is correct.

Option 3)

This option is incorrect.

Option 4)

This option is incorrect.

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