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

Rajasthan BoardEnglish MediumSTD 11 ScienceChemistry8.1. Organic chemistry Nomenclature of organic compounds1 Mark
MCQ
$IUPAC$ name of the below is :
  • A
    But$-2-$ene$-2,3-$diol
  • ✓
    Pent$-2-$ene$-2,3-$diol
  • C
    $2-$methylbut $-2-$ ene $-2,3-$diol
  • D
    Pent$-3-$ene$-3,4-$diol
✓

Answer

Correct option: B.
Pent$-2-$ene$-2,3-$diol
b
Here, $- OH$ is the main functional group.

The number will start from the lower-$OH$ group as shown in the structure.

The name is Pent-$2$-ene-$2,3$-diol.

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