Question

The given reaction is a :

A
B
C
Neutralisation reaction
D
none

Solution

The correct option is A 1,4 addition reactionThe given reaction is a 1,4 addition reaction. In the first step, a molecule of $$HBr$$ is added to a conjugated diene. Both $$H$$ atom and $$Br$$ atom are added to terminal $$C$$ atoms. This is 1,4 addition or conjugate addition. In the next step, the reaction with $$Mg$$ in presence of ether gives a Grignard reagent ($$R-MgX$$) which then attacks a molecule of carbon dioxide. Acid hydrolysis gives carboxylic acid.Chemistry

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