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Question

The IUPAC name of the following structure is:


  1. Ethyl-3-chloro-2-hydroxy-2-methylbutanoate
  2. 1-oxo-2-hydroxy-2-methyl-3-chloroethnoate
  3. Ethyl-2-hydroxy-2-methyl-3-chlorobutanoate
  4. 2-hydroxy-2-methyl-3-chloroethylbutanoate


Solution

The correct option is A Ethyl-3-chloro-2-hydroxy-2-methylbutanoate
Since there is an ester group, it has the highest priority and is the principal functional group as compared to other groups such as halides, alcohol  and alkyl substituents.
Ester suffix: -oate
Alcohol prefix: -hydroxy
Halide prefix : -halo
The naming of the substituents is done in alphabetical order.


The correct IUPAC name is Ethyl-3-chloro-2-hydroxy-2-methylbutanoate
 

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