question_answer

                Self condensation of two moles of ethyl acetate in presence of sodium ethoxide yields:               

A)                  ethyl butyrate

B)                  acetoacetic ester

C)                  methyl acetoacetate

D)                  ethyl propionate

Correct Answer: B

Solution :

                On condensation of two moles of ethyl acetate in presence of sodium ethoxide, gives ethyl aceto-acetate (ester). This condensation is an example of Claisen condensation because it is possible in those ester which have a-hydrogen atom.