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CAS RN: 534-17-8 | 产品编码: C2160
Cesium Carbonate
技术规格
| Appearance | White to Almost white powder to crystal |
| Purity(Nonaqueous Titration) | min. 98.0 % |
物性（参考值）
| 熔点 | 610 °C(dec.) |
| 在水中的溶解度 | 2.77 g/l 20 °C |
GHS
| 象形图 |
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| 信号词 | Danger |
| 危险性说明 | H318 : Causes serious eye damage. H361 : Suspected of damaging fertility or the unborn child. H373 : May cause damage to organs through prolonged or repeated exposure. |
| 防范说明 | P501 : Dispose of contents/ container to an approved waste disposal plant. P260 : Do not breathe dust/ fume/ gas/ mist/ vapors/ spray. P202 : Do not handle until all safety precautions have been read and understood. P201 : Obtain special instructions before use. P280 : Wear protective gloves/ protective clothing/ eye protection/ face protection. P308 + P313 : IF exposed or concerned: Get medical advice/ attention. P305 + P351 + P338 + P310 : IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing. Immediately call a POISON CENTER/doctor. P405 : Store locked up. |
相关法规
| RTECS# | FK9400000 |
运输信息
| HS编码* | 2836.99-000 |
应用
β-Amination of Aliphatic Amides via the β-C(sp3)―H Bonds Activation
Typical Procedure:
Substrate (0.1 mmol), [Pd(allyl)Cl]2 (1.8 mg, 0.005 mmol), tris[3,5-bis(trifluoromethyl)phenyl]phosphine (13.4 mg, 0.02 mmol), O-benzoyl hydroxylamine (0.4 mmol), 4Å molecular sieves (50 mg), and Cs2CO3 (130 mg, 0.4 mmol) are weighed in air and placed in a Schlenk tube (50 mL) with a magnetic stir bar. The reaction vessel is evacuated and backfilled with nitrogen (×3), and DCM (1.5 mL) is added afterwards. The reaction mixture is heated to 120 °C for 16 hours under vigorous stirring. Upon completion, the reaction mixture is cooled to room temperature. The solvents are removed under reduced pressure and the resulting mixture is purified by a silica gel-packed flash chromatography column using hexane/EtOAc/DCM mixtures as the eluent.
Substrate (0.1 mmol), [Pd(allyl)Cl]2 (1.8 mg, 0.005 mmol), tris[3,5-bis(trifluoromethyl)phenyl]phosphine (13.4 mg, 0.02 mmol), O-benzoyl hydroxylamine (0.4 mmol), 4Å molecular sieves (50 mg), and Cs2CO3 (130 mg, 0.4 mmol) are weighed in air and placed in a Schlenk tube (50 mL) with a magnetic stir bar. The reaction vessel is evacuated and backfilled with nitrogen (×3), and DCM (1.5 mL) is added afterwards. The reaction mixture is heated to 120 °C for 16 hours under vigorous stirring. Upon completion, the reaction mixture is cooled to room temperature. The solvents are removed under reduced pressure and the resulting mixture is purified by a silica gel-packed flash chromatography column using hexane/EtOAc/DCM mixtures as the eluent.
References
应用
Arylations of Indoles
Reference
参考文献
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技术规格
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