Allyl bromide

Allyl bromide (3-bromopropene) is an organic halide. It is an alkylating agent used in synthesis of polymers, pharmaceuticals, and other organic compounds. Physically, allyl bromide is a colorless liquid with an intense, acrid, and persistent smell. Allyl bromide is more reactive but more expensive than allyl chloride, and these considerations guide its use.[1]

Allyl bromide
Names
Preferred IUPAC name
3-Bromoprop-1-ene
Other names
Allyl bromide
3-Bromopropene
3-Bromopropylene
3-Bromo-1-propene
Bromoallylene
2-Propenyl bromide
Identifiers
3D model (JSmol)
ChemSpider
ECHA InfoCard 100.003.134
EC Number
  • 203-446-6
RTECS number
  • UC7090000
UNII
UN number 1099
Properties
C3H5Br
Molar mass 120.977 g·mol−1
Appearance Clear to light yellow liquid
Density 1.398 g/cm3
Melting point −119 °C (−182 °F; 154 K)
Boiling point 71 °C (160 °F; 344 K)
Very slightly soluble
1.4697 (20 °C, 589.2 nm)
Hazards
Safety data sheet MSDS at Oxford University
GHS pictograms
GHS Signal word Danger
GHS hazard statements
 H225, H301, H314, H330, H331, H340, H350, H400
P201, P202, P210, P233, P240, P241, P242, P243, P260, P261, P264, P270, P271, P273, P280, P281, P284, P301+310, P301+330+331, P303+361+353, P304+340, P305+351+338, P308+313, P310, P311
NFPA 704 (fire diamond)
Flammability code 3: Liquids and solids that can be ignited under almost all ambient temperature conditions. Flash point between 23 and 38 °C (73 and 100 °F). E.g. gasolineHealth code 3: Short exposure could cause serious temporary or residual injury. E.g. chlorine gasReactivity code 1: Normally stable, but can become unstable at elevated temperatures and pressures. E.g. calciumSpecial hazards (white): no code
3
3
1
Flash point −2 to −1 °C
280 °C (536 °F; 553 K)
Explosive limits 4.3–7.3 %
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
Y verify (what is YN ?)
Infobox references

Synthesis and reactions

It is produced commercially from allyl alcohol. Alternatively allyl chloride reacts with hydrogen bromide in the presence of copper bromide.[1]

The compound is mainly used as an electrophilic allylating agent.[2] Allylzinc bromide may be produced by treating this compound with elemental zinc.

See also

References
  1. Dagani, M. J.; Barda, H. J.; Benya, T. J.; Sanders, D. C. "Bromine Compounds". Ullmann's Encyclopedia of Industrial Chemistry. Weinheim: Wiley-VCH. doi:10.1002/14356007.a04_405.
  2. José C. González-Gómez, Francisco Foubelo, Miguel Yus (2012). "Preparation of Enantioenriched Homoallylic Primary Amines". Org. Synth. 89: 88. doi:10.15227/orgsyn.089.0088.CS1 maint: multiple names: authors list (link)


This article is issued from Wikipedia. The text is licensed under Creative Commons - Attribution - Sharealike. Additional terms may apply for the media files.