[KingV15]

Describe how some alcohols can interfere with an iodoform test for methyl ketones.

-I know that Methyl ketones are the only type of ketones that can undergo this reaction because the three hydrogens on the carbon are necessary in order to form the iodine product.  Also, the formation of yellow iodoform is a positive test for this reaction. I just dont understand how alcohol can interfere with this reaction. Any thoughts?

[Arctic-Nation]

Secondary alcohols can be oxidized to the ketone under the conditions of the haloform reaction. If the product is a methyl ketone, it will then show the haloform reaction taking place as though there was a methyl ketone group present in the compound tested.