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8.1. Organic chemistry Nomenclature of organic compounds — Chemistry STD 11 Science — Question

Gujarat BoardEnglish MediumSTD 11 ScienceChemistry8.1. Organic chemistry Nomenclature of organic compounds1 Mark
MCQ
The $IUPAC$ name of $C{H_3}COCH{(C{H_3})_2}$is
  • A
    Isopropylmethyl ketone
  • B
    $2-$methyl$-3-$butanone
  • C
    $4-$Isopropylmethyl ketone
  • ✓
    $3-$methyl$-2-$butanone
✓

Answer

Correct option: D.
$3-$methyl$-2-$butanone
d
The IUPAC name of this structure is $3$ -Methyl-$2$-butanone.

The longest chain is of four carbon. The functional group here is keto group. The numbering will start from left carbon as the functional group should also have the lowest numbering.

The substituent methyl group will be at third carbon. Hence the IUPAC name of this structure is $3$-Methyl-$2$-butanone.

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