Question

Which of the following compound does not contain a carbonyl group?

• A. Acetylacetone
• B. Diethyl malonate
• C. Amines
• D. Meldrum's acid

Answer 1

The correct option is C

Amines

Explanation for the correct option:

(C) Amines

• Amines are organic compounds and functional groups that contain a nitrogen atom with a lone pair of electrons.
• Amines are the derivatives of ammonia wherein one or more hydrogen atoms can be replaced by substituent groups such as alkyl or aryl.

Structure:

• The three sp³ hybridized orbitals of nitrogen overlap with orbitals of hydrogen or carbon depending upon the configuration of amines.

• It does not contain any carbonyl functional group like

$$\begin{gathered} \mathrm{O} \\ \parallel \\ -\mathrm{C}- \end{gathered}$$

Explanation for incorrect options:

(A) Acetyl acetone contains a carbonyl group. The structure is given below:

(B) Diethyl malonate contains carbonyl groups. The structure is given below:

(D) Meldrum's acid contains carbonyl groups. The structure is shown below:

Hence, option (C) is correct.