The Question is from neet-chemistry classification-of-elements-and-periodicity-in-prop iupac-names, and it was created by the author P SRAVAN KUMAR

Question

What is the IUPAC name of the compound with the structure $CH_3CH_2CH(CH_3)C(C_2H_5)_2CH_2CH_3$?

P SRAVAN KUMAR · Accepted Answer

## CORE INFORMATION
✓ **Answer**: A
## CONCEPT FRAMEWORK
 **Primary Concept**: IUPAC nomenclature of alkanes
 **Related Topics**: Alkyl groups, branched alkanes, longest carbon chain identification
 **Prerequisites**: Understanding of basic organic chemistry, knowledge of alkyl group naming conventions.
## SOLUTION PATHWAY
**Given Information**:
  The given structure is $CH_3CH_2CH(CH_3)C(C_2H_5)_2CH_2CH_3$.
  [Important conditions]: We need to follow IUPAC rules to name the compound.
**Method & Steps**:
 1. Identify the longest continuous carbon chain.
  Reasoning: The longest chain contains six carbon atoms, forming the parent alkane hexane.
  Formula/Rule: Find the longest continuous carbon chain, irrespective of bends or branches.
 2. Number the carbon atoms in the longest chain.
  Working: Numbering should be done in such a way that the substituents get the lowest possible locants.  We start from the left to minimize the numbers.
  Key Point: The lowest locant rule is crucial for correct naming. 
 3. Identify and name the substituents.
  Working: We have two ethyl groups ($C_2H_5$) and two methyl groups ($CH_3$).
 4. Assign locants (numbers) to the substituents.
  Working: Methyl groups are at positions 2 and 4, and the ethyl group is at position 3.
 5. Arrange the substituents alphabetically and write the complete IUPAC name.
  Result: 3-Ethyl-2,4-dimethylhexane
  Verification: Check if the numbering and substituent names are correctly assigned according to IUPAC rules.
 ## OPTION ANALYSIS
A ✓: 3-Ethyl-2,4-dimethylhexane - Correct IUPAC name based on the steps above.
B :x: 2,4-Dimethyl-3-ethylhexane - Incorrect alphabetical order of substituents.
C :x: 3-Isopropyl-4-methylheptane - Incorrect identification of the longest carbon chain and substituents.
D :x: 4-Ethyl-2,3-dimethylhexane - Incorrect numbering of the carbon chain; leads to higher locants.
 ## LEARNING AIDS
 **Common Mistakes**:
  1.Incorrect identification of the longest carbon chain: Carefully examine the molecule to find the longest continuous carbon chain.
  2.Incorrect numbering of the carbon chain: Number the chain to give the lowest possible locants to the substituents.
  3.Incorrect alphabetical ordering of substituents: Alphabetize the substituents before writing the name.
 **Quick Tips**:
  1.Always start by identifying the longest carbon chain.
  2.Use a systematic approach to name branched alkanes following IUPAC rules.

P SRAVAN KUMAR · Answer

The correct Option is "3-Ethyl-2,4-dimethylhexane"

P SRAVAN KUMAR · Answer

2,4-Dimethyl-3-ethylhexane

P SRAVAN KUMAR · Answer

3-Isopropyl-4-methylheptane

P SRAVAN KUMAR · Answer

4-Ethyl-2,3-dimethylhexane

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