5-Bromobenzo[c][1,2,5]oxadiazole
![5-Bromobenzo[c][1,2,5]oxadiazole Structure](CAS/GIF/51376-06-8.gif)
- CAS No.
- 51376-06-8
- Chemical Name:
- 5-Bromobenzo[c][1,2,5]oxadiazole
- Synonyms
- BUTTPARK 85\04-54;5-Bromobenzofurazan,97%;5-BROMO-2,1,3-BENZOXADIAZOLE;2,1,3-Benzoxadiazole,5-bromo-;5-BROMOBENZO[1,2,5]OXA-DIAZOLE;5-Bromobenzo[c][1,2,5]oxadiazole
- CBNumber:
- CB0189006
- Molecular Formula:
- C6H3BrN2O
- Molecular Weight:
- 199
- MOL File:
- 51376-06-8.mol
- Modify Date:
- 2024/7/9 21:58:15
| Melting point | 72 °C |
|---|---|
| Boiling point | 255.8±32.0 °C(Predicted) |
| Density | 1.826±0.06 g/cm3(Predicted) |
| storage temp. | Room temperature. |
| pka | -1.63±0.36(Predicted) |
| form | Solid |
| CAS DataBase Reference | 51376-06-8 |
SAFETY
Risk and Safety Statements
| Symbol(GHS) |  GHS07 |
|||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Signal word | Warning | |||||||||
| Hazard statements | H315-H319-H335 | |||||||||
| Precautionary statements | P280g-P305+P351+P338 | |||||||||
| Hazard Codes | Xi,Xn | |||||||||
| Risk Statements | 22 | |||||||||
| Hazard Note | Irritant | |||||||||
| HS Code | 2934999090 | |||||||||
| NFPA 704 |
|
5-Bromobenzo[c][1,2,5]oxadiazole Chemical Properties,Uses,Production
Uses
5-Bromobenzo[c][1,2,5]oxadiazole, also known as 5-Bromo-2,1,3-benzoxadiazole, is a heterocyclic compound. It can be used as a pharmaceutical intermediate in drug synthesis. It is a derivative of benzo[c][1,2,5]oxadiazole which is a strong electron‐withdrawing unit compared to benzo[c][1,2,5]thiadiazole (BT). Hence BO is usually introduced as an acceptor to construct narrow band-gap donor-acceptor (D-A) materials[1]. BO is incorporated into the naphthalenediimide (NDI) based polymer backbone to improve the performance of polymer semiconductor.
Preparation
Triphenylphosphine (1.1 mmol) was dissolved in dry toluene (3 mL) and stirred at 110°C under argon atmosphere; then 6-bromobenzo[c][1,2,5]oxadiazole 1-oxide (1 mmol) in toluene (0.5 mL) was added dropwise over 1 hour and the resulting mixture was stirred for 3 hours. After completion, the solvent was evaporated in vacuo, and the crude was purified through flash column chromatography (cyclohexane - diethyl ether 98:2) to afford 5-Bromobenzo[c][1,2,5]oxadiazole which is a pale pink solid.
References
[1] Song X, et al. Fusing Benzo[c][1,2,5]oxadiazole Unit with Thiophene for Constructing Wide-bandgap High-performance IDT-based Polymer Solar Cell Donor Material. Macromolecular Rapid Communications, 2018; 39: 1700782.
5-Bromobenzo[c][1,2,5]oxadiazole Preparation Products And Raw materials
Raw materials
Preparation Products
| Supplier | Tel | Country | ProdList | Advantage | Inquiry |
|---|---|---|---|---|---|
| Bhavesh Chem Labs | +91 9182312179 | Telangana, India | 322 | 58 | Inquiry |
| A.J Chemicals | 91-9810153283 | New Delhi, India | 6100 | 58 | Inquiry |
| Shanghai Huici Pharmaceutical Technology Co., LTD | +8618917134367 | China | 133 | 58 | Inquiry |
| Shanghai Huici Pharmaceutical Technology Co., LTD | +8618917134367 | China | 133 | 58 | Inquiry |
| Zibo Hangyu Biotechnology Development Co., Ltd | +86-0533-2185556 +8617865335152 | China | 10986 | 58 | Inquiry |
| Capot Chemical Co.,Ltd. | +86-（0）57185586718 +86-13336195806 | China | 29791 | 60 | Inquiry |
| CONIER CHEM AND PHARMA LIMITED | +8618523575427 | China | 49374 | 58 | Inquiry |
| Fuxin Pharmaceutical | +86-021-021-50872116 +8613122107989 | China | 10032 | 58 | Inquiry |
| Guangzhou Yuheng Pharmaceutical Technology Co., Ltd | +8613580539051 | CHINA | 21142 | 58 | Inquiry |
| Career Henan Chemica Co | +86-0371-86658258 +8613203830695 | China | 30241 | 58 | Inquiry |