Question

1. please name the following compounds:

a.
b.
c.
d.
e.

Explanation:

Step1: Analyze compound a

Identify the functional group (ketone). Count the carbon atoms. The longest carbon chain with the carbonyl group has 5 carbons. There are isopropyl groups on the second and fourth carbons.

Step2: Name compound a

Following IUPAC rules for ketones, it is named 2,4 - dimethyl - 3 - pentanone.

Step3: Analyze compound b

Identify the functional group (aldehyde). The longest carbon chain with the aldehyde group has 5 carbons. There is a hydroxyl group on the second carbon.

Step4: Name compound b

Following IUPAC rules for aldehydes, it is named 2 - hydroxy - pentanal.

Step5: Analyze compound c

Identify the functional group (aldehyde). The longest carbon chain with the aldehyde group has 6 carbons. There is a chlorine atom on the fourth carbon.

Step6: Name compound c

Following IUPAC rules for aldehydes, it is named 4 - chloro - hexanal.

Step7: Analyze compound d

Identify the functional group (ketone). The longest carbon chain with the carbonyl group has 5 carbons. There is an isopropyl group on the second carbon and a bromomethyl group on the fourth carbon.

Step8: Name compound d

Following IUPAC rules for ketones, it is named 2 - isopropyl - 4 - bromomethyl - 3 - pentanone.

Step9: Analyze compound e

Identify the functional group (ketone). It is a cyclic ketone. The ring has 5 carbons. There are two methyl groups on the first carbon.

Step10: Name compound e

Following IUPAC rules for cyclic ketones, it is named 1,1 - dimethyl - cyclopentanone.

Answer:

a. 2,4 - dimethyl - 3 - pentanone
b. 2 - hydroxy - pentanal
c. 4 - chloro - hexanal
d. 2 - isopropyl - 4 - bromomethyl - 3 - pentanone
e. 1,1 - dimethyl - cyclopentanone