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Question
What is formed as a predominant product in the following reaction?
What is formed as a predominant product in the following reaction?
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Solution
The correct option is A CHI3
Iodoform test is used to check the presence of carbonyl compounds with the structure R−CO−CH3 or alcohols with the structure R−CH(OH)−CH3 in a given unknown substance.
When Iodine and sodium hydroxide are added to a compound that contains either a methyl ketone or a secondary alcohol with a methyl group in the alpha position, a pale yellow precipitate of iodoform or triiodomethane is formed. It can be used to identify aldehydes or ketones. If an aldehyde gives a positive iodoform test, then it must be acetaldehyde since it is the only aldehyde with a CH3C=O group.
Hence, the correct answer is option (a).
Steps Involved in Iodoform Reaction:
Step-1: Halogenation of methyl ketone:
Formation of iodoform:
Iodoform test is used to check the presence of carbonyl compounds with the structure R−CO−CH3 or alcohols with the structure R−CH(OH)−CH3 in a given unknown substance.
When Iodine and sodium hydroxide are added to a compound that contains either a methyl ketone or a secondary alcohol with a methyl group in the alpha position, a pale yellow precipitate of iodoform or triiodomethane is formed. It can be used to identify aldehydes or ketones. If an aldehyde gives a positive iodoform test, then it must be acetaldehyde since it is the only aldehyde with a CH3C=O group.
Hence, the correct answer is option (a).
Steps Involved in Iodoform Reaction:
Step-1: Halogenation of methyl ketone:
Formation of iodoform:
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