Ozonolysis of Alkenes

R2C=CR2 + O3 → R2C=O + R2C=O

개요

Ozone cleaves carbon-carbon double bonds to form carbonyl compounds (aldehydes and/or ketones). The reaction proceeds through a molozonide intermediate that rearranges to an ozonide, which is then reduced. Ozonolysis is used to determine alkene double bond positions by identifying the carbonyl fragments.

일상 속 예시

Ozonolysis is used in forensic chemistry to determine the structure of unknown alkenes by analyzing the fragments produced.

산업적 중요성

올레산의 오존 분해는 아젤라산(고분자 합성용)과 펠라르곤산(제초제)을 생산합니다. 의약품 합성에도 사용됩니다.

성질

유형
Organic
가역 반응
아니오
에너지
발열
ΔH
-300.0 kJ/mol
촉매
Zn/AcOH or Me₂S (reductive workup)

관련 반응

Epoxidation of Alkenes (mCPBA) Swern Oxidation Oxidation of Secondary Alcohol to Ketone E2 Elimination (Dehydrohalogenation) Claisen Condensation (Ethyl Acetate) Aldol Condensation of Acetaldehyde Kolbe Electrolysis Baeyer-Villiger Oxidation Beckmann Rearrangement (Cyclohexanone Oxime) Dehydration of Ethanol

Frequently Asked Questions

What is the equation for Ozonolysis of Alkenes?
The balanced equation is: R₂C=CR₂ + O₃ → R₂C=O + R₂C=O.
What type of reaction is Ozonolysis of Alkenes?
Ozonolysis of Alkenes is a organic reaction.
Is Ozonolysis of Alkenes exothermic or endothermic?
Ozonolysis of Alkenes is exothermic (releases energy). The enthalpy change (ΔH) is -300.0 kJ/mol.
What conditions are needed for Ozonolysis of Alkenes?
This reaction requires a catalyst (Zn/AcOH or Me₂S (reductive workup)).