Question:
The IUPAC name for the formula
\[
CH_3 - C( CH_3 ) = C( H ) - COOH
\]
is
The IUPAC name for the formula
\[
CH_3 - C( CH_3 ) = C( H ) - COOH
\]
is
Show Hint
Always give highest priority group (COOH) the lowest number.
Updated On: Apr 15, 2026
- 2-methyl 2-butanoic acid
- 3-methyl 3-butanoic acid
- 3-methyl-2-butanoic acid
- 2-methyl-3-butanoic acid
Show Solution
Verified By Collegedunia
The Correct Option is C
Solution and Explanation
Concept:
Numbering starts from COOH group.
Step 1: Identify chain.
Longest chain including COOH → 4 carbons (butanoic acid).
Step 2: Numbering.
\[ COOH = C1 \Rightarrow \text{double bond at C2} \]
Step 3: Substituent.
Methyl at C3. \[ \Rightarrow 3\text{-methyl-2-butanoic acid} \]
Step 1: Identify chain.
Longest chain including COOH → 4 carbons (butanoic acid).
Step 2: Numbering.
\[ COOH = C1 \Rightarrow \text{double bond at C2} \]
Step 3: Substituent.
Methyl at C3. \[ \Rightarrow 3\text{-methyl-2-butanoic acid} \]
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