In the presence of an excess
base and excess halogen
, a methyl
ketone has formed
hydroxide ion attacks the carboxyl carbon because the trials
methyl ion is the group more easily expelled from the tetrahedral intermediate. The conversion of a methyl ketone to a carboxylic acid is called a haloform reaction because one of the products
is haloform
(CHCI)3)orCHI3orCHBr3Which of the following compound show haloform reaction and racemisation in OD−/D2O.