While p-keto carboxylic acids and their esters have been studied extensively, comparatively little work has been done on &keto sulfonic acids. Until recently the only general method for the preparation of this class of compounds has been the reaction of a-halogenated ketones with alkali sulfite. Only recently it has been reported that some p-keto sulfonic acids can be obtained by treating ketones with SOI-dioxane. l It now has been found that acetone can ...
