Ozonolysis of alkenes: oxidative cleavage to carbonyl compounds (Alkene + O3 (ozonide) → reductive (Zn/H2O or (CH3)2S) or oxidative workup →)
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Alkene + O3 (ozonide) → reductive (Zn/H2O or (CH3)2S) or oxidative workup → aldehydes/ketones or acids.
What each symbol means
| Symbol | What it stands for |
|---|---|
| O3 | Forms molozonide → ozonide intermediate |
| Workup | Reductive: aldehydes/ketones; Oxidative (H2O2): acids instead of aldehydes where applicable |
When to use this
Cleaves C=C completely. H on alkene carbon → aldehyde (unless over-oxidized); two alkyl groups → ketone fragment.