Following has IUPAC name of:
Correct answer: B. 2, 2, 3, 3 - tetramethyl pentane
- A. 2, 3 - tetramethyl butane
- B. 2, 2, 3, 3 - tetramethyl pentane
- C. 3, 3, 4, 4 - tetramethyl butane
- D. 3, 4 - bis (dimethyl butane)
Explanation
The longest carbon chain in the compound above is of five carbons as shown in the figure below, hence the correct option must have a "pent" mentioned, which is the case for B only. Moreover, as we have 4 methyl side chains, equally distributed on carbons 2 and 3, we will mention the carbon number on which the chains are present. The numbers in the IUPAC name must equal the number of side chains hence we have 4 numbers present at the start of the name of the molecule corresponding to the number of side chains present.
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About Alkanes
Alkanes are saturated hydrocarbons containing only carbon-carbon and carbon-hydrogen single bonds, with the general formula CnH2n+2 for open chains. Their structure, isomerism, IUPAC nomenclature, physical properties, combustion, free-radical halogenation and conformations are covered, including the difference between substitution in alkanes and addition in unsaturated hydrocarbons.
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