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Alkene


Introduction

Alkenes, also known as “olefins”, are hydrocarbons characterized by the presence of at least one double-bond connecting a pair of carbon atoms.


Some Examples of Alkenes

Ethene [C2H4] — the simplest of alkenes.


Propene [C3H6]


Cyclopropene [C3H4] — a constitutional isomer of propadiene.


Propadiene [C3H4] — a constitutional isomer of cyclopropene.


Isobutene [C4H8]


Cis-2-butene [C4H8] — a geometric isomer of trans-2-butene and a constitutional isomer of isobutene.


Trans-2-butene [C4H8] — a geometric isomer of cis-2-butene and a constitutional isomer of isobutene.


Some Alkene Reactions


Table of Reactions

Reaction TypeReagentsProducts
AdditionPolarElectrophilicDihalo addition
Hydrohalogenation
Hydrogenation
HydrationHydroboration-OxidationAlkenesAlcohols
Mukaiyama’s Hydration
Oxymercuration
Nucleophilic Addition
Non-PolarFree-radical
Cycloaddition
SubstitutionElectrophilicAromatic
AliphaticNitrosation
Ketone halogenation
Keto-enol tautomerism
NucleophilicUnimolecular [SN1]
Bimolecular [SN2]
Aromatic [SNAr]
Internal [SNI]
EliminationUnimolecular [E1]
Bimolecular [E2]

Regiochemistry

Markovnikov

Stereochemistry

Anti adddition

Syn addition

Erata

Check out this pure HTML periodic table of elements.

Abiogenesis


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