N-ETHYLBENZISOXAZOLIUM TETRAFLUOROBORATE
- CAS No.
- 4611-62-5
- Chemical Name:
- N-ETHYLBENZISOXAZOLIUM TETRAFLUOROBORATE
- Synonyms
- 2-ethyl-2H-1λ,2-benzoxazol-1-ylium;N-ETHYLBENZISOXAZOLIUM FLUOROBORATE;N-ETHYLBENZISOXAZOLIUM TETRAFLUOROBORATE;2-ETHYL-1 2-BENZISOXAZOLIUM TETRAFLUORO&;2-ethyl-1,2-benzisoxazole tetrafluoroborate;2-ETHYL-1,2-BENZISOXAZOLIUM TETRAFLUOROBORATE;N-Ethylbenzisoxazolium tetrafluoroborate, 98+%
- CBNumber:
- CB4413871
- Molecular Formula:
- C9H10BF4NO
- Molecular Weight:
- 234.99
- MOL File:
- 4611-62-5.mol
- Modify Date:
- 2022/8/23 14:33:43
| Melting point | 108-110 °C(lit.) |
|---|---|
| storage temp. | Store at 0-5°C |
| solubility | sol acetonitrile; slightly sol dichloromethane; sol aqueous acid (unstable above pH 4). |
| form | crystalline solid |
| Sensitive | Hygroscopic |
| CAS DataBase Reference | 4611-62-5(CAS DataBase Reference) |
SAFETY
Risk and Safety Statements
| Symbol(GHS) |  GHS07 |
|||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Hazard statements | H315-H319-H335 | |||||||||
| Precautionary statements | P261-P280a-P304+P340-P305+P351+P338-P405-P501a | |||||||||
| Risk Statements | 36/37/38 | |||||||||
| Safety Statements | 22-24/25 | |||||||||
| WGK Germany | 3 | |||||||||
| F | 3-8-10-21 | |||||||||
| NFPA 704 |
|
N-ETHYLBENZISOXAZOLIUM TETRAFLUOROBORATE Chemical Properties,Uses,Production
Description
N-Ethylbenzisoxazolium Tetrafluoroborate is a peptide-coupling reagent; reacts with a wide range of nucleophiles to give o-hydroxy-N-ethylbenzamido derivatives.
Synthesis
N-Ethylbenzisoxazolium Tetrafluoroborate is prepared by ethylation of benzisoxazole with purified Triethyloxonium Tetrafluoroborate.
storage
The salt is reported not to be hygroscopic, although it etches glass on long exposure to moist air; should be protected from light; reported to be an irritant.
Purification Methods
Recrystallise it from MeCN/EtOAc to give magnificent crystals. It is not hygroscopic but on long exposure to moisture it etches glass. It is light-sensitive and should be stored in brown glass bottles. UV (H2O), max 258nm ( 13 100) and 297nm ( 2 900), IR (CH2Cl2): max 1613 (C=N) and 1111-1000 (BF 4 ) [UV, IR, NMR: Kemp & Woodward Tetrahedron 21 3019 1965].
N-ETHYLBENZISOXAZOLIUM TETRAFLUOROBORATE Preparation Products And Raw materials
Raw materials
Preparation Products
N-ETHYLBENZISOXAZOLIUM TETRAFLUOROBORATE Suppliers
| Supplier | Tel | Country | ProdList | Advantage | Inquiry |
|---|---|---|---|---|---|
| CHEMSWORTH | +91-261-2397244 | New Delhi, India | 6700 | 30 | Inquiry |
| Alfa Aesar | 1 800 209 7001 | Maharashtra, India | 6905 | 58 | Inquiry |
| Career Henan Chemica Co | +86-0371-86658258 +8613203830695 | China | 30231 | 58 | Inquiry |
| XIAMEN AMITY INDUSTRY AND TRADE CO., LTD. | +8618950047208 | China | 43416 | 58 | Inquiry |
| DAYANG CHEM (HANGZHOU) CO.,LTD | +8617705817739 | China | 53881 | 58 | Inquiry |
| ABCR GmbH & CO. KG | 49 721 95061 0 | Germany | 6831 | 75 | Inquiry |
| Absin Bioscience Inc. | 021-38015121-8802 | CHINA | 6208 | 58 | Inquiry |
| Merck KGaA | 21-20338288 | China | 292394 | 58 | Inquiry |
| VWR International | 800 932 5000 | United Kingdom | 6548 | 82 | Inquiry |
| Spectrum Chemicals & Laboratory Products | 310 516 8000 | United States | 6699 | 77 | Inquiry |
| Supplier | Advantage |
|---|---|
| CHEMSWORTH | 30 |
| Alfa Aesar | 58 |
| Career Henan Chemica Co | 58 |
| XIAMEN AMITY INDUSTRY AND TRADE CO., LTD. | 58 |
| DAYANG CHEM (HANGZHOU) CO.,LTD | 58 |
| ABCR GmbH & CO. KG | 75 |
| Absin Bioscience Inc. | 58 |
| Merck KGaA | 58 |
| VWR International | 82 |
| Spectrum Chemicals & Laboratory Products | 77 |