Answer:
The IUPAC name is therefore: 2,5,5-trimethyl-2-hexene. In example (2) the longest chain incorporating both carbon atoms of the double bond has a length of five. There is a seven-carbon chain, but it contains only one of the double bond carbon atoms. Consequently, the root name of this compound will be pentene.
Step-by-step explanation:
the name of the compound is written out with the substituents in alphabetical order followed by the base name (derived from the number of carbons in the parent chain).