Question

determine the iupac name of the below organic compound: image of the organic structure (h₃c-ch₂-ch₂-ch(ch₃)-ch₂-ch₂-ch₃)

○ a. 1,3-dimethylhexane

○ b. 4-methylheptane

○ c. 2-propylpentane

○ d. does not exist

○ e. 1-methyl-1-propylbutane

Explanation:

To determine the IUPAC name, first find the longest carbon chain (parent chain). The structure has 7 carbon atoms (heptane). Then, identify substituents: a methyl group ($\ce{-CH3}$) on the 4th carbon of the heptane chain. Check other options: a is wrong (incorrect parent chain length), c is wrong (uses propyl which is not the longest chain), e is wrong (incorrect parent chain and substituents), d is wrong as the compound exists. So the correct name is 4 - methylheptane.

Answer:

b. 4 - methylheptane