Bromocyclohexane

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Bromocyclohexane
File:Cyclohexyl bromide.svg
Names
Preferred IUPAC name
Bromocyclohexane
Other names
Cyclohexyl bromide
Identifiers
3D model (JSmol)
ChemSpider
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UNII
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  • InChI=1S/C6H11Br/c7-6-4-2-1-3-5-6/h6H,1-5H2 checkY
    Key: AQNQQHJNRPDOQV-UHFFFAOYSA-N checkY
  • InChI=1/C6H11Br/c7-6-4-2-1-3-5-6/h6H,1-5H2
    Key: AQNQQHJNRPDOQV-UHFFFAOYAD
  • BrC1CCCCC1
Properties
C6H11Br
Molar mass 163.06 g/mol
Appearance colorless liquid
Density 1.324 g/cm3
Melting point −57 °C (−71 °F; 216 K)
Boiling point 166 to 167 °C (331 to 333 °F; 439 to 440 K)
Hazards
Flash point 62.8 °C (145.0 °F; 335.9 K)
Related compounds
Related compounds
Chlorocyclohexane
Fluorocyclohexane
Iodocyclohexane
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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Bromocyclohexane (also called cyclohexyl bromide, abbreviated CXB) is an organic compound with the chemical formula (CH2)5CHBr.

Uses and reactions

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It is used to match the refractive index of PMMA for example in confocal microscopy of colloids. A mixture of cis-decalin and CXB can simultaneously match optical index and density of PMMA.[1] Due to the moderate dielectric constant of CXB (ε = 7.9 [2]), PMMA acquires charges that can be screened by the addition of salt (e.g. tetrabutyl ammonium bromide), leading to a very good approximation of colloidal hard sphere.[3] A drawback is that CXB is a good solvent for PMMA, causing it to swell over time, which may lead to a poor determination of particle radii and determination of solid volume fraction.[4]

It is a standard coupling partner of cross coupling reactions.[5] Similarly, cyclohexyl bromide is a standard alkylating agent.[6]

Stated applications in drug chemistry include the synthesis of gamfexine, drofenine, trihexyphenidyl, procyclidine, feclemine, hexocyclium, hexasonium, amedin & oxyphenonium respectively.

Synthesis

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Bromocyclohexane can be prepared by the free radical bromination of cyclohexane.

Safety

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Bromocyclohexane is an alkylating agent.

References

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