question_answer

Acetoacetic ester behaves as     [CPMT 1988]

A)                 An unsaturated hydroxy compound

B)                 A keto compound

C)                 Both of these ways

D)                 None of these

Correct Answer: C

Solution :

           \[\underset{\begin{smallmatrix}  \text{Acetoacetic ester} \\  \text{    ( keto form)} \end{smallmatrix}}{\mathop{C{{H}_{3}}-\overset{O}{\mathop{\overset{||}{\mathop{C}}\,}}\,-C{{H}_{2}}-\overset{O}{\mathop{\overset{||}{\mathop{C}}\,}}\,-O-{{C}_{2}}{{H}_{5}}}}\,\] ⇌                                                  \[\underset{\text{(enolic form)}}{\mathop{C{{H}_{3}}-\overset{OH}{\mathop{\overset{|}{\mathop{C}}\,=}}\,CH-\overset{O}{\mathop{\overset{||}{\mathop{C}}\,}}\,-O-{{C}_{2}}{{H}_{5}}}}\,\]