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 Type | Reagents | Products | ||||
| Addition | Polar | Electrophilic | Dihalo addition | |||
| Hydrohalogenation | ||||||
| Hydrogenation | ||||||
| Hydration | Hydroboration-Oxidation | Alkenes | Alcohols | |||
| Mukaiyama’s Hydration | ||||||
| Oxymercuration | ||||||
| Nucleophilic Addition | ||||||
| Non-Polar | Free-radical | |||||
| Cycloaddition | ||||||
| Substitution | Electrophilic | Aromatic | ||||
| Aliphatic | Nitrosation | |||||
| Ketone halogenation | ||||||
| Keto-enol tautomerism | ||||||
| Nucleophilic | Unimolecular [SN1] | |||||
| Bimolecular [SN2] | ||||||
| Aromatic [SNAr] | ||||||
| Internal [SNI] | ||||||
| Elimination | Unimolecular [E1] | |||||
| Bimolecular [E2] | ||||||
Regiochemistry
Markovnikov
Stereochemistry
Anti adddition
Syn addition
Erata
Check out this pure HTML periodic table of elements.