Answer:
1-Octene.
Step-by-step explanation:
- Identify and name the longest continuous chain of carbon atoms that passes through the double bond. Replace the -ane ending of the corresponding alkane to get the base name octene.
- Number the carbon atoms from the end closest to the double bond.
- Locate the double bond by using the lower-numbered of its two carbon atoms. Insert the name of the locant just before the name of the functional group. Use a hyphen to connect numbers and letters.
The IUPAC name is oct-1-ene.
Note: The name 1-octene is acceptable, but the Preferred IUPAC Name puts the locants as close as possible in front of the groups they locate
