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2 Butyne

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Formula  C4H6
Density  691 kg/m³
Molar mass  54.0904 g/mol
Classification  Alkyne

Addition of chlorine to 2 butyne


2-Butyne (dimethylacetylene, crotonylene or but-2-yne) is an alkyne with chemical formula CH3C≡CCH3. Produced artificially, it is a colorless, volatile, pungent liquid at standard temperature and pressure.

Contents

2-Butyne httpsuploadwikimediaorgwikipediacommons11

2-Butyne (dimethylethin) forms with 5-decyne (dibutylethin), 4-octyne (dipropylethin) and 3-hexyne (diethylethin) a group of symmetric alkynes.

Synthesis

2-Butyne can be synthesized by the rearrangement of ethylacetylene in a solution of ethanolic potassium hydroxide.

Applications

2-Butyne, along with propyne, is used to synthesize alkylated hydroquinones in the total synthesis of Vitamin E.

2-Butyne 2butyne Kovats Retention Index
2-Butyne 2Butyne CAS 503173 SCBT
2-Butyne 1Bromo2butyne C4H5Br ChemSpider

References

2-Butyne Wikipedia


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