Alkene Reactions - Organic Chemistry

In this video we go through the 7 Must-Know Reactions of Alkenes.

Must-Know Alkene Reaction

1. Reduction or hydrogenation of alkene to form alkane using hydrogen in platinium catalyst, heat

reduction of alkene to form alkane

2. Bromination of alkene to form dibromoalkane using bromine in organic solvent at room temperature

bromination of alkene to form dibromoalkane

3. Hydrobromination of alkene to form bromoalkane using HBr at room temperature

hydrobromination of alkene to form bromoalkane

4. Electrophilic addition of alkene to form bromoalcohol with aqueous bromine at room temperature

reaction of alkene with aqueous bromine to form bromoalcohol

5. Electrophilic addition of water to form alcohol using either of the following reagents and conditions:

a. concentrated H2SO4 at room temperature followed by water, heat

b. steam in concentrated H3PO4 at 350oC and 70 atm

electrophilic addition of alkene with water to form alcohol

6. Mild oxidation of alkene to form diol using cold KMnO4 in aqueous sodium hydroxide

mild oxidation of alkene to form diol

7. Strong oxidation of alkene to form different organic compounds using hot KMnO4 in aqueous H2SO4

oxidative cleavage of alkene using hot acidified KMnO4

Memorising the reagents and conditions for these Alkene reactions is an integral part of Organic Chemistry, so I've added 2 short memory tests.

Let's see if you can remember all of them!

Topic: Alkenes, Organic Chemistry, A Level Chemistry, Singapore

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