Question

Give structure and IUPAC name of the tert- pentyl.

Answer 1

Hint: Tert-pentyl is a type of an alkyl group. Here, tertiary suggests it has a carbon atom that is bonded with other three carbon atoms. Pentyl suggests the presence of a total five carbons.

Complete step by step answer:
Look, in the name Tert-pentyl, the –yl suffix suggests that it is not a compound but it is an alkyl group.
- Tert is used for tertiary carbon atoms which means that one carbon atom is attached with other three carbon atoms. Pentyl suggests that there are a total five carbons present in the group. So, the structure of this group will be as follows.

Now, to assign it an IUPAC name we will use –yl suffix as it is an alkyl group.
- Now, find the longest carbon chain which is of three carbons. So, we will use the word Prop. We will not use propane here because it is not a complete compound but it is an alkyl group.
- We will start numbering from the carbon that has methyl groups substituted on it. So, we can say that there are methyl groups on first carbons only. So, we can assign the name 1,1-dimethyl propyl.
Thus, we can conclude that the IUPAC name of this group is 1,1-dimethyl propyl.

Note: Note that whenever there is –yl suffix behind the name, it suggests that it is a substituent group and not a complete organic compound. Make sure that you give numbering to the main carbon chain from the carbon that has two substituent methyl groups because it is a rule that we need to give preference to the carbon having substituent groups.