Question

Question #c4488

Answer 1

The structural formula shown above.
The longest C-chain selected contains 6 c-atoms .
So the Stem name is hex.
Longest C-chain is numbered giving preference to the `C=C` and that is why it gets minimum locant (2). So suffix is 2-ene

Branching , a `-CH_3` group is linked with C-2. Hence the prefix name becomes 2-methyl.

Finally adding those names we get complete name as
2-methylhex-2-ene