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Tuesday, January 28, 2020

What is a haloform reaction?


The oxidative cleavage of Methyl ketones as well as acetaldehyde and 2° terminal alcohol into into a carboxylate anion and a trihalomethane  (haloform) by the reaction of one of halogen in the presence of strong alkali like NaOH or KOH is known as Haloform reaction.

The respective halogen can be chlorine, bromine or iodine.The methyl group of a methyl ketone is converted into an trihalomethane by multiple subsequent steps, that involve formation of an intermediate enolate anion.

Related Questions:
Chlorination of ethane to ethyl chloride is more practicable than chlorination of n-Pentane to 1-Chloropentanc. Why ?

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