Among the following the number of compounds which will give positive iodoform reaction is_____.
(a) l-Phenylbutan-2-one
(b) 2-Methylbutan-2-ol
(c) 3-Methylbutan-2-ol
(d) 1-Phenylethanol
(e) 3, 3-dimethylbutan-2-one
(f) l-Phenylpropan-2-ol

Question

Accepted Answer

Correct answer: 4. (4) Iodoform test is used to check the presence of carbonyl compounds with the structure R - CO – CH_3 or alcohols with the structure R - CH(OH) - CH_3 in a given unknown substance. The reaction of iodine, a base and a methyl ketone gives a yellow precipitate along with an "antiseptic" smell. Hence, (c), (d), (e) and (f) give iodoform reaction

$Among the following the number of compounds which will give positive iodoform reaction is_____. (a) l-Phenylbutan-2-one (b) 2-Methylbutan-2-ol (c) 3-Methylbutan-2-ol (d) 1-Phenylethanol (e) 3, 3-dimethylbutan-2-one (f) l-Phenylpropan-2-ol$

Solution

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