но- + I2 CHI3 `CH3 methyl ketone excess iodoform carboxylate ion

Organic Chemistry
9th Edition
ISBN:9781305080485
Author:John E. McMurry
Publisher:John E. McMurry
Chapter22: Carbonyl Alpha-substitution Reactions
Section22.SE: Something Extra
Problem 27MP
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In the presence of excess base and excess halogen, a methyl ketone is converted to a carboxylate ion. The reaction is known as the haloform reaction because one of the products is haloform (chloroform, bromoform, or iodoform). Before spectroscopy became a routine analytical tool, the haloform reaction served as a test for methyl ketones: the formation of iodoform, a bright yellow compound, signaled that a methyl ketone was present. Why do only methyl ketones form a haloform?

но-
+ I2
CHI3
`CH3
methyl ketone
excess
iodoform
carboxylate ion
Transcribed Image Text:но- + I2 CHI3 `CH3 methyl ketone excess iodoform carboxylate ion
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