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| | N-ETHYLBENZISOXAZOLIUM TETRAFLUOROBORATE Basic information |
| Product Name: | N-ETHYLBENZISOXAZOLIUM TETRAFLUOROBORATE | | Synonyms: | 2-ETHYL-1,2-BENZISOXAZOLIUM TETRAFLUOROBORATE;N-ETHYLBENZISOXAZOLIUM TETRAFLUOROBORATE;2-ethyl-1,2-benzisoxazole tetrafluoroborate;2-ETHYL-1 2-BENZISOXAZOLIUM TETRAFLUORO&;N-Ethylbenzisoxazolium tetrafluoroborate, 98+%;N-ETHYLBENZISOXAZOLIUM FLUOROBORATE;2-ethyl-2H-1λ,2-benzoxazol-1-ylium | | CAS: | 4611-62-5 | | MF: | C9H10BF4NO | | MW: | 234.99 | | EINECS: | 225-019-3 | | Product Categories: | | | Mol File: | 4611-62-5.mol |  |
| | N-ETHYLBENZISOXAZOLIUM TETRAFLUOROBORATE Chemical Properties |
| 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) |
| | N-ETHYLBENZISOXAZOLIUM TETRAFLUOROBORATE Usage And Synthesis |
| 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 |
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