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327-51-5 - 1,4-Dibromo-2,5-difluorobenzene, 98% - A14248 - Alfa Aesar

A14248 1,4-Dibromo-2,5-difluorobenzene, 98%

CAS Number
327-51-5
Synonyms

Size Price ($) Quantity Availability
5g 32.26
25g 127.20
100g 540.75
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1,4-Dibromo-2,5-difluorobenzene, 98%

MDL
MFCD00000346
EINECS
206-317-2

Chemical Properties

Formula
C6H2Br2F2
Formula Weight
271.89
Melting point
60-64°
Boiling Point
96°/20mm
Solubility
Soluble in methanol. Insoluble in water.

Applications

1,4-Dibromo-2,5-difluorobenzene has been used in the preparation of 1,2,4,5-tetrakis(phosphino)-3,6-difluorobenzenes and poly(2,5-difluoro-2?,5?-didodecyl-4,4?-biphenylylene.

Notes

Stable under recommended storage conditions. Store in cool, dry place in tightly closed containers. With good ventilation. Store away from oxidizing agent.

Literature References

Kongprakaiwoot N, et al. New synthetic route to polyphosphine ligands bearing 1,2,4,5-tetrakis (phosphino) benzene framework: structural characterizations of 1, 4-(PPh2)2-2, 5-(PR2)2-C6F2(R= Ph, iPr, Et). J. Organomet. Chem. 2004, 689 (21), 3350-56.

Kowitz C; and Wegner Gl. Functionalized poly-and oligo-phenylenes: Variations on the Suzuki cross-coupling of functionalized aryl dibromides with the 1, 3-propanediol diester of 2, 5-dialkyl-1, 4-phenylenediboronic acid. Tetrahedron. 1997, 53 (45), 15553-74.

For discussion of reaction with n-BuLi, including formation of dibenzyne, see: Org. Synth., 75, 201 (1997); see also 1,2,4,5-Tetrabromobenzene, L13539.

GHS Hazard and Precautionary Statements

Hazard Statements: H315-H319-H335

Causes skin irritation. Causes serious eye irritation. May cause respiratory irritation.

Precautionary Statements: P261-P280-P305+P351+P338-P304+P340-P362-P312-P321-P405-P403+P233-P501a

Avoid breathing dust/fume/gas/mist/vapours/spray. Wear protective gloves/protective clothing/eye protection/face protection. IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing. IF INHALED: Remove to fresh air and keep at rest in a position comfortable for breathing. Take off contaminated clothing and wash before reuse. Call a POISON CENTER or doctor/physician if you feel unwell. Specific treatment (see label). Store locked up. Store in a well-ventilated place. Keep container tightly closed. Dispose of contents/container in accordance with local/regional/national/international regulations.

Other References

Beilstein
2250095
Harmonized Tariff Code
2903.99
TSCA
No

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