Concept explainers
Interpretation:
The name of compound should be determined for the following skeletal structure.
- 2, 2, 3-trimethyl-3-ethylpentane
- 3-ethyl-3, 4, 4-trimethylpentane
- 2-butyl-2-ethylbutane
- is 3-ethyl-2, 2, 3-trimethylpentane
- 2, 2-dimethyl, 3-diethyl, 3-methylpropane
Concept introduction:
Compounds consist of carbon and hydrogen is known as hydrocarbons. Saturated hydrocarbon is known as alkane having general molecular formula
Rules of naming
- First choose the longest continuous chain of carbon atoms known as parent chain and determines the base name of alkane.
- The numbering of parent chain should be done in a way that the substituents get the lowest number.
- The appropriate name should be given to every alkyl group and denote its position on the parent chain with the number.
- The alkyl groups are written in alphabetical order.
Answer to Problem 15STP
Option (D) is correct that is 3-ethyl-2, 2, 3-trimethylpentane.
Explanation of Solution
The skeletal structure of compound:
- The longest continuous chain contains five carbon atoms and the base name is pentane.
- Two substituents that are two methyl groups are present on second carbon atom of the chain.
- Two substituents that are ethyl and methyl group are present on third carbon atom of the chain.
- The numbering for the substituents is given as: 2, 2, 3-trimethyl and 3-ethyl
- Since, ethyl is starting with alphabet “e” thus, comes first in the naming of the compound.
Therefore, the name of the compound is 3-ethyl-2, 2, 3-trimethylpentane.
Hence, option (D) is correct.
Chapter 21 Solutions
Glencoe Chemistry: Matter and Change, Student Edition
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