Question
Chemistry Question on Organic Chemistry- Some Basic Principles and Techniques
The incorrect IUPAC name is
A
CH3–C–CH–CH3 O CH3-methyl-3-butanone
B
CH3–CH–CHCH3 CH2–CH3–CH3 2, 3-dimethyl pentane
C
CH3–C≡CCH(CH3)2 4-methyl-2-pentyne
D
)CH3–CH–CH–CH3 Cl Br 2-bromo-3-chloro butane
Answer
CH3–C–CH–CH3 O CH3-methyl-3-butanone
Explanation
Solution
The correct option is(A):CH3–C–CH–CH3 O CH3-methyl-3-butanone. The given compound has the following structure: CH3–C–CH–CH3OCH3mIn this structure: The longest carbon chain contains four carbon atoms.There is a ketone functional group (C=O) on the third carbon atom in the chain.There is a methyl group (-CH3) attached to the second carbon atom in the chain.Based on these structural features, the IUPAC name "methyl-3-butanone" is correct. so the answer "CH3–C–CH–CH3 O CH3-methyl-3-butanone" is justified.