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CAS RN: 140-89-6 | 产品编码: E0194
Potassium Ethylxanthate
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技术规格
| Appearance | White to Orange to Green powder to crystal |
| Purity(Iodometric Titration) | min. 95.0 % |
| alkali | to pass test |
| Sensitiveness | Colorimetric Test : Turn Pale red with Molybdenum |
物性（参考值）
| 熔点 | 210 °C(dec.) |
| 溶解性（可溶于） | 乙醇 |
| 溶解性（不溶于） | 乙醚 |
GHS
| 象形图 |
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| 信号词 | Warning |
| 危险性说明 | H302 : Harmful if swallowed. H315 : Causes skin irritation. H319 : Causes serious eye irritation. |
| 防范说明 | P501 : Dispose of contents/ container to an approved waste disposal plant. P270 : Do not eat, drink or smoke when using this product. P264 : Wash skin thoroughly after handling. P280 : Wear protective gloves/ eye protection/ face protection. P302 + P352 : IF ON SKIN: Wash with plenty of water. P337 + P313 : If eye irritation persists: Get medical advice/ attention. P305 + P351 + P338 : IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing. P362 + P364 : Take off contaminated clothing and wash it before reuse. P332 + P313 : If skin irritation occurs: Get medical advice/ attention. P301 + P312 + P330 : IF SWALLOWED: Call a POISON CENTER/doctor if you feel unwell. Rinse mouth. |
相关法规
| RTECS# | FG1575000 |
运输信息
| HS编码* | 2930.90-900 |
应用
TCI Practical Example: Oxazole Ring Construction Using Potassium Ethylxanthogenate
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Used Chemicals
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- Methyl 3-Amino-4-hydroxybenzoate [M3498]
- Potassium Ethylxanthate [E0194]
- Methanol (= MeOH)
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Procedure
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Potassium ethylxanthate (1.00 g, 6.28 mmol) was added to methyl 3-amino-4-hydroxybenzoate (700 mg, 4.19 mmol) in methanol (10 mL) and stirred at reflux for 2 hours. Then potassium ethylxanthate (1.00 g, 6.28 mmol) was added to the solution and stirred at reflux for 1 hour. After cooling to room temperature, acetic acid (3 mL) and water (30 mL) were added to the solution. The resulting precipitate was collected by filtration and dried to afford 1 as a white solid (842 mg, 96% yield).
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Experimenter’s Comments
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The reaction mixture was monitored by UPLC.
All the procedures were conducted in a fume hood due to a slightly rotten smell.
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Analytical Data
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Methyl 2-Mercaptobenzo[d]oxazole-5-carboxylate (1)
1H NMR (270 MHz, CDCl3); δ 14.13 (brs, 1H), 7.89 (dd, J = 6.4, 2.2 Hz, 1H), 7.69 (d, J = 1.62 Hz, 1H), 7.63 (d, J = 8.4 Hz, 1H), 3.88 (s, 3H).
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Lead Reference
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- The discovery and optimization of a series of 2-aminobenzoxazole derivatives as ChemR23 inhibitors
应用
Potassium Xanthates: Powerful Palladium Scavengers
References
- Potassium isopropyl xanthate (PIX): an ultra-efficient palladium scavenger
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