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Ozonolysis of Alkenes

Ozonolysis of Alkenes Followed by Reduction: Acid Hydrolysis

As an example, the individual steps during acid hydrolysis are described below.

The first step is the protonisation of the secondary ozonide.

Fig.1

This is followed by nucleophilic attack of water at the neighboring C atom.

Fig.2

Subsequently, hydrogen peroxide is split off.

Fig.3

The last step consists of another addition of water resulting in the fragmentation of the molecule. The gem-diols formed in the reaction are labile and generate the carbonyl compounds by immediately eliminating water .

Fig.4
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