DJXEMBER, 1962 OZONOLYSIS OF DIHYDROPYRAN 4499 condensation giving lorn polymeric peracetals as the isolable products of the reaction. A further complication arose in that aldehyde end groups in the polymeric peracetals were partially converted to acetals by the methanol solvent. One would expect, on the basis of the Criegee mechanism2 and some knowledge of the way in which unsymmetrical carbon-carbon double bonds are split by ...
