Question

What is the correct IUPAC name of the following compound?

• A. 3-methylpentane
• B. Propan-2-isonitrile
• C. Butan-2-isonitrile
• D. 2-Isonitrilepropane

Answer 1

The correct option is C Butan-2-isonitrile

Isocyanides :
Isocyanides ( $-\stackrel{+}{N}\equiv \stackrel{-}{C}$ or $N\overrightarrow{=}C$)
Suffix: −isonitrile is used.
Here at 2-position of the parent chain isonitrile group is present.
So, the IUPAC name of the following compound is Butan-2-isonitrile