Nomenclature of a FISH

Chemistry Level 2

What is the IUPAC name of the following compound?

(IUPAC - International Union Of Pure and Applied Chemistry)
1,2-dimethylcyclopropylcyclohexane 1,2-dimethylbicyclo[5.2]octane 7,8-dimethylspiro[5.2]octane 1,2-dimethylspiro[2.5]octane

Akhil Bansal by Akhil Bansal , 22, India

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1 solution

Based on Basic IUPAC Organic Nomenclature the base compound is named as follows:

  • Functional group is an alkane, therefore suffix = -ane
  • The ring structure requires the prefix spiro
  • The ring structure is C8 therefore root = oct
  • Excluding the spirocenter, one ring has two C atoms and the other has five C atoms = [2.5]

And since there are two (di) methane attached to first and second carbon atoms, we have:

1,2-dimethylspiro[2,5]octane \text{1,2-dimethylspiro[2,5]octane}

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