iodoform rxn

JEE Main 2015 Preparation › Organic Chemistry questions › iodoform rxn

in the iodoform reaction of ethanol , the number of moles of base (naoh) consumed per mole of ethanol is?

ans: 5 (how?)

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Vivek @ Born this Way ·2012-04-01 00:18:10

You should be able to count 4 easily(WHich are involved in any Haloform Reaction , 3 for H extraction and 1 for elimination), the extra one is used for the oxidation of the ethanol to acetyldehyde.

hence 5.

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rishabh ·2012-04-01 02:31:02

after the first 4 OH^- we get 2 OH on the same carbon, so water eliminates hence giving acetaldehyde right? so where is the 5th one used?

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Vivek @ Born this Way ·2012-04-01 22:31:48

First you form acetaldehyde using 1 OH. Then procees with the normal Iodoform which uses 4 OH.

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iodoform rxn

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