Abstract

Abstract An efficient method for the preparation of ozonides via the reaction of alkenes and ozone under dry conditions is described. The influx of a pre-dried ozone stream into a dichloromethane solution of the olefinic substrates in the presence of molecular sieve 4Å afforded the corresponding ozonides in good to high yields. The reaction in the absence of a molecular sieve gave poor results. The structure of the ozonide was unambiguously confirmed by XRD analysis.

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