Thermal reactions of gem-dichlorocyclopropyl ethers in alcoholic solvents and in the presence of base results in ring opening with formation of acetals of the general structure, RRIC= CCICH (OCzHr) OR*, in good yields. The ring opening is independent of base, which is only present in order to neutralize the acid formed. Simple kinetic measurements have been carried out by following the consumption of base. The reaction shows first-order ...