Which of the following statements is true about the anion formed from the reaction of diethyl malonate with sodium ethoxide?
A)It can react with an $\infty$,$\beta$-unsaturated ester by conjugate addition.
B)It can condense with aldehydes and ketones.
C)It can be alkylated with an alkyl halide.
D)It is resonance stabilized.
E)All of these statements are true.

Question

Quizplus · Accepted Answer

The anion formed from the reaction of diethyl malonate with sodium ethoxide is commonly known as the malonic ester anion. This anion is capable of undergoing several reactions due to the presence of two enolate groups in its structure.

A) It can react with an α,β-unsaturated ester by conjugate addition as the two enolate groups can act as nucleophiles.
B) It can condense with aldehydes and ketones in the presence of a base to form β-keto esters.
C) It can be alkylated with an alkyl halide by an S N 2 reaction. 
D) The malonic ester anion is resonance stabilized due to the delocalization of negative charge over the two carbonyl groups.

All of the statements given in the question are true, making option E the correct choice.

Which of the Following Statements Is True About the Anion ∞\infty∞

Which of the Following Statements Is True About the Anion $\infty$