Chemistry:Bromocyclopropane

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Bromocyclopropane
Cyclopropyl bromide.svg
Names
Preferred IUPAC name
Bromocyclopropane
Other names
Cyclopropyl bromide, cyclopropylbromide
Identifiers
3D model (JSmol)
ChemSpider
EC Number
  • 224-375-7
Properties
C3H5Br
Molar mass 120.977 g·mol−1
Appearance liquid
Density 1.515 g/cm3
Boiling point 68–70 °C (154–158 °F; 341–343 K)
Insoluble
Hazards
GHS pictograms GHS02: FlammableGHS07: Harmful
GHS Signal word Danger
H225, H315, H319, H335
P210, P233, P240, P241, P242, P243, P261, P264, P264+265Script error: No such module "Preview warning".Category:GHS errors, P271, P280, P302+352, P303+361+353, P304+340, P305+351+338, P319Script error: No such module "Preview warning".Category:GHS errors, P321, P332+317Script error: No such module "Preview warning".Category:GHS errors, P337+317Script error: No such module "Preview warning".Category:GHS errors, P362+364Script error: No such module "Preview warning".Category:GHS errors, P370+378, P403+233, P403+235, P405, P501
Related compounds
Related compounds
Chlorocyclopropane
Fluorocyclopropane
Iodocyclopropane
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
Infobox references
Tracking categories (test):

Bromocyclopropane is a organobromine compound with the chemical formula C
3
H
5
Br
.[2] It is a member of haloalkane family.

Synthesis

The compound can be obtained by treating silver cyclopropanecarboxylate with bromine:[3]

C
3
H
5
CO
2
Ag + Br
2
→ C
3
H
5
Br + AgBr + CO
2

Chemical properties

Reaction with magnesium, using diethyl ether as solvent, only gives about 25–30% of the cyclopropylmagnesium bromide Grignard reagent, with nearly as much cyclopropane formed by alternate reactions on the metal surface.[4]

The compound isomerizes on heating to produce 1-bromopropene and 3-bromopropene.[5]

Physical properties

The compound is a flammable liquid that causes skin irritation and serious eye irritation. It is soluble in chloroform and methanol. Insoluble in water.[6]

See also

References

  1. "Bromocyclopropane" (in en). https://pubchem.ncbi.nlm.nih.gov/compound/78037#section=Safety-and-Hazards. 
  2. "Bromocyclopropane". Sigma Aldrich. https://www.sigmaaldrich.com/RU/en/product/aldrich/c117307. 
  3. Roberts, John D.; Chambers, Vaughan C. (July 1951). "Small-Ring Compounds. VI. Cyclopropanol, Cyclopropyl Bromide and Cyclopropylamine" (in en). Journal of the American Chemical Society 73 (7): 3176–3179. doi:10.1021/ja01151a053. ISSN 0002-7863. 
  4. Walborsky, H. M.; Zimmermann, Christoph (June 1992). "The surface nature of Grignard reagent formation. Cyclopropylmagnesium bromide" (in en). Journal of the American Chemical Society 114 (13): 4996–5000. doi:10.1021/ja00039a007. ISSN 0002-7863. 
  5. Grant, R. C. S.; Swinbourne, E. S. (1 January 1966). "The thermal isomerization of chlorocyclopropane and of bromocyclopropane" (in en). Chemical Communications (17): 620b–621. doi:10.1039/C1966000620B. ISSN 0009-241X. 
  6. "Bromocyclopropane, 99%". Alfa Aesar. https://www.alfa.com/ru/catalog/A14996/.