Many aldehydes and ketones are better known by their common names. Draw the structural formula of each of the following carbonyl compounds. Their common names are given within parentheses.
(a) 2,2-dimethylpropanal (pivaldehyde)
(b) 2-hydroxy-1,2-dipheny1-1-ethanone (benzoin)
(c) 2-propenal (acrolein)
(d) 4-methyl-3-penten-2-one (mesityl oxide)
(e) 5,5-dimethy1-1,3-cyclohexanedione (dimedone)