what is wrong with these names?provide the correct name for each.
i.2-Dimethylpentane {4]
ii.2-Ethylpentane {4}
iii.5,5-Dimethyl-3-ethylhexane {4]
2,2-Dimethylpentane
1-Ethylpentane
1-ethyl-3,3-Dimethylyhexane
You need to figure then why these are correct.
i. only one location of the substituent is represented on the name.
ii.i disagree on this one i think the correct name here is 2-methylhexane because the longest chain is 6 carbons long not 5 carbons
iii.the parent chain is numbered incorrectly
you are correct, I was thinking on ii cyclohexane.
thank you very much
To identify what is wrong with each of these names and provide the correct name, we need to understand the naming conventions for organic compounds.
i. 2-Dimethylpentane:
The prefix "2-" indicates that the substituent is attached to the carbon atom at the 2nd position in the main chain. However, "2-Dimethylpentane" does not specify which carbon atom has the methyl substituents. The correct name is "2,2-Dimethylpentane," indicating that both methyl groups are attached to the carbon atom at the 2nd position.
ii. 2-Ethylpentane:
The prefix "2-" indicates that the substituent is attached to the carbon atom at the 2nd position in the main chain. However, "2-Ethylpentane" does not specify which carbon atom has the ethyl substituent. The correct name is "3-Ethylpentane," indicating that the ethyl group is attached to the carbon atom at the 3rd position.
iii. 5,5-Dimethyl-3-ethylhexane:
The numbering in the name is incorrect. The longest carbon chain in the structure has six carbon atoms, making it a hexane. The correct name is "3-Ethyl-5,5-dimethylhexane," indicating that the ethyl group is attached to the carbon atom at the 3rd position, and the two methyl groups are attached to the carbon atom at the 5th position. Note that when multiple substituents are present, they are named in alphabetical order.
By following the rules of organic compound nomenclature and identifying the correct positions and order of substituents, we can provide the correct names for each compound.