question_answer

In the reaction sequence \[2C{{H}_{3}}CHO\xrightarrow[{}]{O{{H}^{-}}}A\xrightarrow[{}]{\Delta }B;\]the product B is: [JEE Main Online Paper (Held On 11 April 2015)]  

A) \[C{{H}_{3}}-C{{H}_{2}}-C{{H}_{2}}-C{{H}_{2}}-OH\]

B) \[C{{H}_{3}}-CH=CH-CHO\]

C) \[C{{H}_{3}}-\overset{\begin{smallmatrix}  O \\  || \end{smallmatrix}}{\mathop{C}}\,-C{{H}_{3}}\]

D) \[C{{H}_{3}}-C{{H}_{2}}-C{{H}_{2}}-C{{H}_{3}}\]

Correct Answer: B

Solution :

  \[C{{H}_{3}}-CH=CH-CHO\] Aldol condensation reaction