Alkynes

The ALKYNES family contains TRIPLE BONDS between the carbons.
All their names end in yne, which means TRIPLE BOND.

Here is an example of an alkyne.
Notice the carbon chain in RED, and that there is a TRIPLE BOND between two of the carbons.
We say that the TRIPLE BOND is at carbon 1. TWO bromine atoms are added in as well.

3,4-dibromo-but-1-yne

Step 1
The road is 4 carbons long.
Now 4 carbons = but
Notice that the numbering starts closer to where the triple bond is, and not from where the bromine is located.

Step 2
The TRIPLE BOND is at carbon number 1.
Hence we say 1-yne.

We combine but and 1-yne.
Hence the road name is but-1-yne.

Step 3
Now the bromine atoms are found at carbon 3 and 4

We call it 3,4-dibromo
(di means 2 atoms)

We combine all the words into one big word!

Hence the name is:
3,4-dibromo-but-1-yne

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