Category: Ozonolysis

Step 1 The electrophilic addition of ozone to the carbon-carbon bond forms the molozonide intermediate which is quite unstable. Due to this unstable nature, the molozonide continues reacting – breaking apart to form a carbonyl molecule and a carbonyl oxide molecule as shown below: Step 2 The carbonyl molecule and the carbonyl oxide molecule formed… Continue reading Ozonolysis of Alkenes Mechanism

Alkenes can undergo ozonolysis to form alcohols, aldehydes, ketones, or carboxylic acids. The general procedure uses a solution of alkene in methanol. Ozone is bubbled through this solution at approximately 780 Celsius. When the solution turns blue, the alkene is consumed (the blue colour comes from the unreacted ozone). Other indicators of the endpoint of… Continue reading Ozonolysis of Alkenes

The Ozonolysis mechanism proceeds via an oxidative cleavage reaction. The ozone not only breaks the carbon pi bond but also the carbon-carbon sigma bond. It involves the attack of ozone on the given reactant to form an ozonide. To eliminate the oxygen in this intermediate stage, zinc dust is employed (since it forms zinc oxide… Continue reading Ozonolysis Mechanism

Ozone is a very reactive allotrope of oxygen. The reaction of ozone with alkenes and alkynes causes the oxidative cleaving of the alkene or alkyne. The carbon-carbon triple bonds are replaced with carbon-oxygen double bonds, giving the required carbonyl product as shown below.

Oxidation of alkenes with the help of ozone can give alcohols, aldehydes, ketones, or carboxylic acids. Alkynes undergo ozonolysis to give acid anhydrides or diketones. If water is present in the reaction, the acid anhydride undergoes hydrolysis to yield two carboxylic acids. Ozonolysis of elastomers is also known as ozone cracking. Trace amounts of ozone… Continue reading What is Ozonolysis?

Ozonolysis refers to the organic chemical reaction where ozone is employed to cleave the unsaturated bonds of alkenes, alkynes, and azo compounds (compounds with the functional diazenyl functional group). It is an organic redox reaction. What is Ozonolysis? Oxidation of alkenes with the help of ozone can give alcohols, aldehydes, ketones, or carboxylic acids. Alkynes… Continue reading Ozonolysis Mechanism