4,5-dimethyl-2-hexyne
1) ROOT= identify longest consecutive chain
> longest C chain= 6 Carbons= hex
2) MULT. BOND INDEX
> multiple bonds are given the lowest possible # (here, the triple bond is on the second carbon)
> a triple bond= “yne”
> between root and suffix
3) Specify substituents (atom/ group that appears on a C chain instead of H)
> more than one substituent= correct prefix (di, tri, tetra); in this case, it’s di-“methyl”
> since there are 2 substituents, there MUST be the correct number of corresponding numerals- these indicate the location of the substituent (which C the substituent is on)
Putting it together,
(4,5-di methyl)(-2-hexyne)
