4-Vinylcyclohexene
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| Appearance | Colorless liquid |
| Density | 0.8299 g/cm3 at 20°C |
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| Solubility | soluble in benzene, diethyl ether, petroleum ether |
| Vapor pressure | 2 kPa |
| Template:Longitem | 1.4639 (20 °C) |
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| Template:Longitem | Buta-1,3-diene Cyclohexene |
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4-Vinylcyclohexene is an organic compound consisting of a vinyl group attached to the 4-position of the cyclohexene ring. It is a colorless liquid. Although chiral, it is used mainly as the racemate. It is a precursor to vinylcyclohexene dioxide.[3]
Production
It is produced by buta-1,3-diene dimerization in a Diels-Alder reaction.[4][3] The reaction is conducted at 110 - 425 °C at pressures of 1.3 - 100 MPa in the presence of a catalyst. A mixture of silicon carbide and salts of copper or chromium comprises the catalyst. A competing product is 1,5-cyclooctadiene.
In North America this is produced by Nippon Chemical Texas Inc. in Pasadena, TX.
Safety
4-Vinylcyclohexene is classified as a Group 2B carcinogen by the IARC ("possibly carcinogenic to humans").[5]
References
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Script error: No such module "Check for unknown parameters".6. https://nctius.com/op-coproduct-streams/