4,7-Dibromo-2,1,3-benzoxadiazole
- Product Name
- 4,7-Dibromo-2,1,3-benzoxadiazole
- CAS No.
- 54286-63-4
- Chemical Name
- 4,7-Dibromo-2,1,3-benzoxadiazole
- Synonyms
- 4,7-dibroMobenzo[c][1,2,5]oxadiazole;BO-2Br;2,1,3-Benzoxadiazole,4,7-dib;4,7-Dibromo-2,1,3-benzoxadiazole;2,1,3-Benzoxadiazole,4,7-dibroMo-;2,1,3-Benzoxadiazole,4,7-dibromo-benzofurazan;4,7-DibroMo-benzofurazan 4,7-DibroMo-benzofurazan;4,7-Dibromo-benzofurazan 4,7-Dibromo-benzofurazan ,99%
- CBNumber
- CB62520997
- Molecular Formula
- C6H2Br2N2O
- Formula Weight
- 277.9
- MOL File
- 54286-63-4.mol
4,7-Dibromo-2,1,3-benzoxadiazole Property
- Melting point:
- 113 °C
- Boiling point:
- 312.4±45.0 °C(Predicted)
- Density
- 2.220±0.06 g/cm3(Predicted)
- storage temp.
- Sealed in dry,Room Temperature
- solubility
- soluble in Toluene
- form
- powder to crystal
- pka
- -4.27±0.50(Predicted)
- color
- White to Yellow to Orange
- InChI
- InChI=1S/C6H2Br2N2O/c7-3-1-2-4(8)6-5(3)9-11-10-6/h1-2H
- InChIKey
- ZUGAIWASFADONS-UHFFFAOYSA-N
- SMILES
- N1=C2C(Br)=CC=C(Br)C2=NO1
Safety
- HS Code
- 2934.99.4400
Hazard and Precautionary Statements (GHS)
- Symbol(GHS)
-
- Signal word
- Warning
- Hazard statements
-
H302Harmful if swallowed
H315Causes skin irritation
H319Causes serious eye irritation
H335May cause respiratory irritation
- Precautionary statements
-
P261Avoid breathing dust/fume/gas/mist/vapours/spray.
P305+P351+P338IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing.
N-Bromosuccinimide Price
- Product number
- D4614
- Product name
- 4,7-Dibromo-2,1,3-benzoxadiazole
- Packaging
- 200MG
- Price
- $97
- Updated
- 2026/03/19
- Product number
- D4614
- Product name
- 4,7-Dibromo-2,1,3-benzoxadiazole
- Packaging
- 1G
- Price
- $289
- Updated
- 2026/03/19
- Product number
- D426268
- Product name
- 4,7-Dibromobenzo[c][1,2,5]oxadiazole
- Packaging
- 500mg
- Price
- $200
- Updated
- 2021/12/16
- Product number
- FD161214
- Product name
- 4,7-Dibromo-?2,?1,?3-?benzoxadiazole
- Packaging
- 5G
- Price
- $340
- Updated
- 2021/12/16
- Product number
- HCH0228256
- Product name
- 4,7-DIBROMO-2,1,3-BENZOXADIAZOLE
- Purity
- 95.00%
- Packaging
- 5MG
- Price
- $496.87
- Updated
- 2021/12/16
4,7-Dibromo-2,1,3-benzoxadiazole Chemical Properties,Usage,Production
Synthesis
273-09-6
54286-63-4
Benzo[c][1,2,5]oxadiazole (2.5 g, 21 mmol) was added as raw material, iron powder (0.23 g, 4.2 mmol) was added and heated to 90°C to melt. Subsequently, bromine (3.2 ml, 62 mmol) was slowly added dropwise to the molten liquid and the reaction mixture was refluxed for 2 hours. Upon completion of the reaction, the resulting solution was poured into ice water and a precipitate was precipitated and collected by filtration. The precipitate was mixed with aqueous NaHCO3 solution, stirred for 15 min and filtered again. Purification by fast chromatography (hexane/EtOAc 9:1) afforded 4,7-dibromobenzofurazan as an orange solid (1.5 g, 25% yield). The product was characterized as follows: melting point 88-92 °C; IR spectra (thin film method, cm-1 ) 1514, 1344, 1201, 1026, 954, 871, 841; 1H NMR (500MHz, CDCl3) δ 7.51 (2H, s, Ar-H); 13C NMR (126MHz, CDCl3) δ 149.6 (C=N), 134.4 (C=N), 134.4 (C=N), 134.4 (C=N). ), 134.4 (Ar-C), 108.9 (ipso-Ar-C); mass spectra (EI) m/z 280 ([81Br,81Br] M+, 6%), 278 ([81Br,79Br] M+, 8%), 276 ([79Br,79Br] M+, 6%), 250 (5%), 248 (10%), 246 (7%) , 197 (5%). All data are in agreement with literature reports.
References
[1] Journal of Materials Chemistry C, 2015, vol. 3, # 5, p. 973 - 976
[2] New Journal of Chemistry, 2012, vol. 36, # 3, p. 550 - 553
[3] Journal of the American Chemical Society, 2008, vol. 130, # 2, p. 732 - 742
[4] Journal of Materials Chemistry C, 2015, vol. 3, # 35, p. 9145 - 9153
[5] Patent: WO2009/34396, 2009, A2. Location in patent: Page/Page column 91-92
4,7-Dibromo-2,1,3-benzoxadiazole Preparation Products And Raw materials
Raw materials
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View Lastest Price from 4,7-Dibromo-2,1,3-benzoxadiazole manufacturers
- Product
- 4,7-Dibromo-benzofurazan 4,7-Dibromo-benzofurazan ,99% 54286-63-4
- Price
- US $9.80/KG
- Min. Order
- 1g
- Purity
- ≥99%
- Supply Ability
- 100kg
- Release date
- 2020-01-08