Which of the following compound will give positive iodoform test ?

Options

A. Isopropyl alcohol
B. Propionaldehyde
C. Ethylphenyl ketone
D. Benzyl alcohol

Answer

A

Explanation

Alcohols (and aldehydes and Ketones) on heating with `X_(2)(Cl_(2), Br_(2),I_(2))` and `overline(O)H`from `CHX_(3)` (haloform). This reaction is given by the following molecules.
(i) `CH_(3)CH_(2)OH`
(ii) `CH_(3)-underset(OH)underset(|)(C )HR`(`2^(2)` alcohol with `-OH` at `C_(2)`)
(iii) `CH_(3)underset(OH)underset(|)(C )R` (keto group at `C_(2)` or compound with acetyl `CH_(3)CO` -- group)
(iv) `CH_(3)CHO`
`:.` isopropyl alcohol

will give positive iodoform test.