Question

What is the name of the compound shown in the figure?

• A. Butene
• B. Propyne
• C. Propyne-2
• D. Butyne

Answer 1

The correct option is B Propyne

The parent chain consists of 3 carbon atoms, therefore, the root word is "prop". There is a triple bond in the chain, this is indicated by the suffix, yne. Also, the parent chain is numbered such that the multiple bond gets the lowest number.

So the correct name of the compound is prop-1-yne or propyne.