Answer:
The IUPAC name of given compound is 2-Ethyl-1-Butene.
Step-by-step explanation:
First of all, a longest chain containing a double bond was selected as a parent chain, as it has four carbon atoms and a double bond at position 1, so parent name is,
1-Butene
Ethyle (CH₃-CH₂-) is the substituent present at position 2. So, complete name will be as follow,
2-Ethyl-1-Butene
can also be written as,
2-Ethylbut-1-ene