Dimethylacetylene
 |
|
 |
|
| Names | |
|---|---|
|
Preferred IUPAC name
But-2-yne
|
|
| Other names
Dimethylacetylene
Crotonylene |
|
| Identifiers | |
|
3D model (JSmol)
|
|
| ChemSpider | |
| ECHA InfoCard | 100.007.239 |
|
PubChem CID
|
|
|
|
|
|
| Properties | |
| C4H6 | |
| Molar mass | 54.0904 g/mol |
| Density | 0.691 g/mL |
| Melting point | −32 °C (−26 °F; 241 K) |
| Boiling point | 27 °C (81 °F; 300 K) |
|
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
|
|
 (what is   ?) |
|
| Infobox references | |
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.
2-Butyne (dimethylethin) forms with 5-decyne (dibutylethin), 4-octyne (dipropylethin) and 3-hexyne (diethylethin) a group of symmetric alkynes.
2-Butyne can be synthesized by the rearrangement of ethylacetylene in a solution of ethanolic potassium hydroxide.
2-Butyne, along with propyne, is used to synthesize alkylated hydroquinones in the total synthesis of Vitamin E.
...
Wikipedia