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Alkynes are hydrocarbons containing a carbon-carbon triple bond. They undergo a variety of reactions, including:
Addition reactions: Alkynes can add hydrogen, halogens, water, and other reagents across the triple bond.
Electrophilic attack: The pi electrons in the triple bond make alkynes susceptible to electrophilic attack.
Dehydration: Alkynes can be prepared by the dehydration of vicinal dihalides.
Oxidation: Alkynes can be oxidized to carboxylic acids using strong oxidizing agents like potassium permanganate.
Metathesis: Alkynes can undergo metathesis reactions, which involve the exchange of fragments between two molecules.