The reductive ozonolysis of an alkene gave butanone and ethanal. Give the structure of alkene and its IUPAC name.

Explanation

Write the structures of the products with carbonyl groups facing each other.
`underset("Ethanal")(CH_(3)-CH)=O+O=underset("Butanone")overset(CH_(3))overset(|)(C)-CH_(2)CH_(3)rarr`
Remove oxygens and put the double bond between the carbonyl carbons to get alkene.
`underset("3-Methylpent-2-ene")(CH_(3)-CH=overset(CH_(3))overset(|)(C)-CH_(2)CH_(3))`