Formation de dioxolannes a partir de l'épichlorhydrine du glycerol. Hydrolyse aisée de dioxolannes par le tosylate de pyridinium

We described a versatile synthesis of dioxolanne from 1-chlor 2, 3-epoxypropane epichlorhydrine and different carbonyl compounds in presence of activated montmorillonite which is easily eliminated after the reaction. The hydrolysis was performed in mild conditions with pyridinium p-toluene sulfonate.