Organic Chemistry – Some Basic Principles and Techniques · NEET Preparation Chemistry
The IUPAC name of the compound CH3-CH(OH)-CH2-CH(CH3)-CHO is:
Practice question from Organic Chemistry – Some Basic Principles and Techniques (NEET Preparation Chemistry), with the correct answer and a step-by-step solution.
medium · MCQ · Q-991B5D
The IUPAC name of the compound CH3-CH(OH)-CH2-CH(CH3)-CHO is:
- A.4-hydroxy-2-methylpentanalCorrect answer
- B.2-methyl-4-hydroxypentanal
- C.4-hydroxy-1-methylpentanal
- D.2-methyl-4-oxopentan-2-ol
Solution
The principal functional group is the aldehyde group (-CHO), which gets carbon-1. Numbering the longest carbon chain containing the aldehyde carbon: C1 is -CHO, C2 is -CH(CH3)-, C3 is -CH2-, C4 is -CH(OH)-, and C5 is -CH3. At position 4, there is a hydroxy group, and at position 2, there is a methyl group. Thus, the IUPAC name is 4-hydroxy-2-methylpentanal.
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