When an asymmetrical reactant such as HBr, HCl and H2O is added to an asymmetrical alkene, two possible products can be formed. Markovnikov Rule, which states that hydrogen will be added to the carbon with more hydrogen, can be used to predict the major product of this reaction.
The explanation behind Markovnikov Rule is when hydrogen is added to the carbon with more hydrogen, a more stable carbocation is formed hence the formation of this more stable carbocation is favoured which eventually ends up as the major product.
We can use the mechanism Electrophilic Addition of alkenes to predict the two carbocations formed, and compare which carbocation is more stable by comparing the number of electron-donating alkyl groups attached to the carbocation.
Check out this video lesson to learn how to determine major product for alkene addition reactions using Markovnikov Rule, and learn how to compare stability of carbocations!
Topic: Alkenes, Organic Chemistry, A Level Chemistry, Singapore
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Markovnikov Rule: How to determine Major Product for Alkene Addition Reaction | |
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| Education | Upload TimePublished on 29 Mar 2018 |
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