Make the structure of following organic compounds-
`1 "Isopropylidene Bromide" " "2. "Isobutylene glycol" " "3. "Trimethylene glycol"`

Explanation

1
2. `H_(3)C-underset(CH_(3))underset(|)overset(OH)overset(|)(C ) -CH_(2)-OH`
`underset(OH)underset(|)(CH_(2))-CH_(2)-underset(OH)underset(|)(CH_(2)`