Alkenes and Alkynes

Example of an Alkene

Example of an Alkyne


The naming rules for double and triple bonds are almost the same, except there’s one thing that we need to add.

Double bonds take priority.
There are two possible ways to number the carbon atoms.
When we’re numbering we must choose the lowest number

Double bonds (alkenes) end in –ene

Triple bonds (alkynes) end in –yne

Multiple double bonds:
As we all know more than one double bond can exist in a molecule.
The only difference here is that we use the same multipliers inside the parent chain.
EXAMPLE: (1,3 butadiene)

Here's a great video that teaches how to name Alkenes and Alkynes.

-Ben Suratos