question_answer

\[{{C}_{6}}{{H}_{9}}Br\xrightarrow[-{{(C{{H}_{3}})}_{3}}COH]{{{(C{{H}_{3}})}_{3}}C{{O}^{-}}{{K}^{+}}}X\xrightarrow{C{{H}_{2}}=CHCOC{{H}_{3}}}B\]conversion of X to B is:

A)  Claisen reaction

B)  Perkin reaction

C)  Diels-Alder reaction

D)  Mannich reaction

Correct Answer: C

Solution :

The conversion of X to B is Diels-Alder reaction because it consists of the addition of a conjugated diene to a unsaturated molecule, generally called as a dienophile, resulting in the formation of a cyclic compound. Commonly known as adduct.