Question

What carbonyl compound and diol are needed to prepare each compound?

a.

b.

Short answer

a. The carbonyl compound and diol needed to prepare compound a are benzaldehyde and ethane-1,2-diol, respectively.

b. The carbonyl compound and diol needed to prepare compound b are propan-2-one and catechol, respectively.

Step-by-step solution

Carbonyl compound

Compounds comprising the carbonyl group can be called carbonyl compounds. These compounds form a significant part of organic chemistry, and some of them include aldehydes and ketones.

Diol

Compounds comprising two hydroxyl groups can be denoted as diols. The term used for aliphatic diols is glycols.

Carbonyl compound and diol required to prepare the given compounds

a.The ball-and-stick model can be converted to a skeletal structure that can be given as:

Skeletal structure of compound a

The treatment of aldehyde and ketone with diols leads to the generation of an acetal. The carbonyl compound and diol needed to prepare compound a is benzaldehyde and ethane-1,2-diol. The reaction can be given as:

Carbonyl compound and diol needed to prepare compound a

b.The ball-and-stick model of compound b can be converted to skeletal structure as:

Skeletal structure of compound b

An acetal is created on the reaction of the given carbonyl compound with a diol. The carbonyl compound used for the reaction is propan-2-one, and the diol is catechol. The reaction can be given as:

Carbonyl compound and diol needed to prepare compound b