Question

1. please provide systematic names for the following compounds:

a.
b.
c.
d.
e.

Explanation:

Step1: Identify longest carbon - chain for a

The longest carbon - chain has 6 carbons. There are two methyl groups at C - 2 and C - 5.
The name is 2,5 - dimethylhexane.

Step2: Analyze structure b

There is a cyclohexane ring attached to a benzene ring. There is an isopropyl group on the cyclohexane ring. The name is (1 - isopropylcyclohexyl)benzene.

Step3: Determine double - bond position for c

The longest carbon - chain has 6 carbons with a double - bond between C - 3 and C - 4. There are ethyl groups at C - 3 and C - 4. The name is (3E) - 3,4 - diethyl - 3 - hexene (assuming E - configuration based on the orientation of the groups).

Step4: Name compound d

There is a cyclopentene ring with two bromine atoms at C - 1. The name is 1,1 - dibromocyclopentene.

Step5: Name compound e

There is a benzene ring with a methyl group and a bromine atom. The bromine is at C - 1 and the methyl is at C - 2. The name is 1 - bromo - 2 - methylbenzene.

Answer:

a. 2,5 - dimethylhexane
b. (1 - isopropylcyclohexyl)benzene
c. (3E) - 3,4 - diethyl - 3 - hexene
d. 1,1 - dibromocyclopentene
e. 1 - bromo - 2 - methylbenzene