A hydrocarbon containing two double bonds gave on reductive ozonolysis ethanol, glyoxal and propanone. Predict the structure of the hydrocarbon and give its IUPAC name.

Explanation

To write the structure of the products of ozonolysis with their carbonyl groups facing each other.
`underset"Ethanal"(CH_3-oversetoverset(H)(|)C=O) " " underset"Glyoxal"(O=oversetoverset(H)|C-oversetoversetH|C=O) " " underset"Propanone"(O=oversetoverset(CH_3)|C-CH_3`
Step 2 . To write the structure of the hydrocarbon
Remove oxygen atoms from each of the three carbonyl compounds and connect them by double bonds , we have,
`underset"2-Methylhexa-2,4-diene"(underset6CH_3-underset5oversetoversetH|C=underset4oversetoversetH|C-underset3oversetoversetH|C=underset2oversetoverset(CH_3)|C-underset1CH_3)`
Thus, the given hydrocarbon is 2-methylhexa-2,4-diene.