Ozonolysis ozonator

Ozonolysis. Ozone was generated from oxygen by silent electric discharge, and bubbled through the reaction mixtures from a capillary tip. The ozone concentration was monitored spectrophotometrically at 350 nm by the KI method as previously described (8). 

The synthesis starts with the routine nitration of available 228 and the base-catalysed reaction of 227 with benzaldehyde to give 229 (226 R=Ph). It is necessary to protect this and benzylation in base gives predominantly the isomer 230 with the longest conjugated system. Ozonolysis (ozonation) reveals the stable crystalline carboxylic acid 232. After deprotection, both isomers give 225. 

Ozonolysis Ozone-induced cleavage of a carbon-carbon double or triple bond. 

Ozonide A compound formed by the reaction of ozone with an alkene. Ozonolysis Ozone-induced cleavage of a carbon-carbon double or triple bond. 

The mechanism proposed by Criegee best describes the degradation initiated by ozone called ozonolysis. Ozone, a very reactive material, reacts at the surface, across the double bond, in an unsaturated polymer to form a trioxolane stmcture. This stmcture undergoes decomposition to give a carbonyl compound and a zwitterion, resulting in a severed molecular chain. The zwitterion can recombine to form either an ozonide, diperoxide, or higher peroxide. 

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