Question

Arrange the following in a proper sequence for writing the structural formula from the given IUPAC name 4-methyl-4-nonene.
(a) Locate the primary suffix and insert at the given position.
(b) Identify the substituent and insert at the given position.
(c) Add a suitable number of hydrogen atoms to satisfy the valencies of each carbon atom.
(d) Identify the root word and write down the parent carbon chain.

• A. dacb
• B. bdac
• C. dabc
• D. dbca

Answer 1

The correct option is C dabc

The formula for 4 -methyl-4-nonene can be written as ; $C{H}_3-C{H}_2-C{H}_2-\left(C{H}_3\right)C=CH-C{H}_2-C{H}_2-C{H}_2-C{H}_3$.
This can be obtained from the following steps:
i)(i) Identify the root word and write down the parent carbon chain.
(ii) Locate the primary suffix (-ene) and insert at the given position $(C-4)$.
(iii) Identify the substituent( methyl group) and insert at the given position $(C-4)$.
(iv) Add a suitable number of hydrogen atoms to satisfy the valencies of each carbon atom.