Question

Name the following:

a.

b.

c.

d.

e.

f.

Short answer

a. 2,2-dimethylazacyclopropane or 2,2-dimethylaziridine

b. 4-ethylazacyclohexane or 4-ethylpiperidine

c.2-methylthiacyclopropane or 2-methylthiirane

d.3-methylazacyclobutane or 3-methylazetidine

e. 2,3-dimethyloxacyclopentane or 2,3-dimethyltetrahydrofuran

f. 2-ethyloxacyclobutane or 2-ethyloxetane

Step-by-step solution

Step-by-Step SolutionStep 1:Deciding the parent structure

1. Parent structure is a triangle shaped structure having two carbon atoms and one nitrogen atom. It is known as aziridine.
2. Here, the parent structure is a cyclohexane when one carbon atom is substituted by a nitrogen atom. So, the parent structure is known as piperidine.
3. Here, the parent structure is also a triangle shaped structure with two carbon atoms and one sulfur atom. Thus, its name is thiirane.
4. This is a four sided structure with three carbon atoms and one nitrogen atom. So, the parent structure is azetidine.
5. Here, the basic structure is a cyclopentane in which oxygen is used instead of one carbon atom. So, the parent structure is known as oxolane.
6. Basic structure is a four sided one with three carbon atoms and one oxygen atom. So, the parent structure is known as oxetane.

Step 2: Nomenclature

1. At the second position, there are two methyl substituents. So, the nomenclature will be 2,2-dimethylaziridine or 2,2-dimethylazacyclopropane.
2. At the fourth position, there is an ethyl group substituted by a carbon atom. The position at which nitrogen atom is located, it is the first position. Thus, the compound is named as4-ethylazacyclohexane or 4-ethylpiperidine.
3. At the second position of thiirane, there is a methyl group. So, the compound is named as 2-methylthiirane or 2-methylthiacyclopropane.
4. At the third position of azetidine, there is a methyl group. So, the compound will be named as 3-methylazetidine or 3-methylazacyclobutane.
5. There are two methyl groups at the second and third positions of tetrahydrofuran or oxolane. So, the compound will be named as 2,3-dimethyltetrahydrofuran or 2,3-dimethyloxolane or2,3-dimethyloxacyclopentane.
6. There is an ethyl group at the second position of oxetane. So, the compound name will be 2-methyloxetane.