Sunday, November 9, 2008

Alkenes - Revision Facilitator

Alkenes Introduction

Nomenclature

Isomerism

Methods of Preparation

Partial reduction of alkynes

Dehydrohalogenation of alkyl halides.

Dehalogenation of vicinal dihalides (dihalogen compounds)

Dehydration of alcohols

Kolbe's electrolytic method (alkenes from salts dicarboxylic acids)

Preparation of alkenes by elimination reactions

Alkenes - Physical properties

1. State

2. Melting points

3. Boiling points

4. Dipole moments

5. Solubility


Alekenes Chemical Properties

Electrophilic addition reactions

Halogen acids
Water
Hypohalous acid
Sulphuric acid

oxidation,

Combustion
Hydroboration oxidation
Potassium permanganate - cold and hot
Catalytic oxidation
Reaction with Ozone

Reduction

Polymerisation
of ethene
of vinyl chloride
of styrene
of tetrafluoroethylene



Replacement reactions.

Addition of sulphuric acid

Acidity of alkenes

Acid catalysed hydration of alkenes

Reactions of alkenes with KMnO4

Reactions of Alkenes with Ozone

Reduction of Alkenes

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