This account describes the development of methodologies for 'reductive'ozonolysis, the direct ozonolytic conversion of alkenes into carbonyl groups without the intermediacy of 1, 2, 4-trioxolanes (ozonides). Ozonolysis of alkenes in the presence of DMSO produces a mixture of aldehyde and ozonide. The combination of DMSO and Et3N results in improved yields of carbonyls but still leaves unacceptable levels of residual ozonides; similar results ...
[Roydhouse, M. D.; Motherwell, W. B.; Ghaini, A.; Constantinou, A.; Cantu-Perez, A.; Gavriilidis, A. Organic Process Research and Development, 2011 , vol. 15, # 5 p. 989 - 996]