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Question

Chemistry Question on Nomenclature Of Organic Compounds

IUPAC name of neopentyl chloride is

A

1−Chloro—2,2—dimethylpropane1- Chloro — 2, 2 — dimethylpropane

B

2−Chloro—1,2—dimethylpropane2- Chloro — 1, 2 — dimethylpropane

C

2−Chloro—2—Methylbutane2- Chloro — 2 —Methylbutane

D

2−Chloro—2—Methylpentane2- Chloro — 2 —Methylpentane

Answer

2−Chloro—1,2—dimethylpropane2- Chloro — 1, 2 — dimethylpropane

Explanation

Solution

The IUPAC name of neopentyl chloride is 2−Chloro−2,2−dimethylpropane2-Chloro-2,2-dimethylpropane.

The neopentyl group, also known as 2,2−dimethylpropyl2,2-dimethylpropyl, consists of a central carbon bonded to three methyl groups and one chlorine atom. In the IUPAC name, we prioritize the chloro substituent by assigning it the lowest possible number, which is 22.

The two methyl groups are named as "2,2−dimethyl2,2-dimethyl" to indicate their positions on the carbon chain.

The parent hydrocarbon is propane since it contains three carbon atoms.

Therefore, the correct answer is (B): 2−Chloro−2,2−dimethylpropane2-Chloro-2,2-dimethylpropane.