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CAS RN: 16695-22-0 | 產品號碼: B4136
N,N-Bis[2-(p-tolylsulfonyloxy)ethyl]-p-toluenesulfonamide
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產品規格
| Appearance | White to Almost white powder to crystal |
| Purity(HPLC) | min. 98.0 area% |
| Purity(with Total Nitrogen) | min. 98.0 % |
| Melting point | 93.0 to 97.0 °C |
| NMR | confirm to structure |
性質
| 熔點 | 95 °C |
| 溶解性（可溶於） | Methanol |
GHS
| 圖形表示 |
|
| 信號詞 | Warning |
| 危險性說明 | H317 : May cause an allergic skin reaction. H413 : May cause long lasting harmful effects to aquatic life. |
| 防範說明 | P501 : Dispose of contents/ container to an approved waste disposal plant. P261 : Avoid breathing dust/ fume/ gas/ mist/ vapors/ spray. P273 : Avoid release to the environment. P272 : Contaminated work clothing should not be allowed out of the workplace. P280 : Wear protective gloves. P302 + P352 : IF ON SKIN: Wash with plenty of water. P362 + P364 : Take off contaminated clothing and wash it before reuse. P333 + P313 : If skin irritation or rash occurs: Get medical advice/ attention. |
相關法規
運輸資料
| HS編碼* | 2935.90-000 |
Application
A Useful Reagent for the Synthesis of Piperazines
Synthesis of 1-Cyclohexyl-4-tosylpiperazine
N,N-Bis[2-(p-tolylsulfonyloxy)ethyl]-p-toluenesulfonamide (B4136, 5.83 g, 10.3 mmol), K2CO3 (P1748, 8.00 g, 58.0 mmol), cyclohexylamine (C0494, 0.99 g, 10.0 mmol), and anhydrous CH3CN (50 mL) are added to a round-bottom flask. The mixture is heated to reflux under an N2 atmosphere for 12 h. The mixture is cooled to r.t. and filtered. The filtrate is concentrated, and the residue is purified by flash chromatography (SiO2, CH2Cl2－CH3OH－Et3N as eluent) to give 1-cyclohexyl-4-tosylpiperazine as a white solid in 83% yield (2.67 g).
N,N-Bis[2-(p-tolylsulfonyloxy)ethyl]-p-toluenesulfonamide (B4136, 5.83 g, 10.3 mmol), K2CO3 (P1748, 8.00 g, 58.0 mmol), cyclohexylamine (C0494, 0.99 g, 10.0 mmol), and anhydrous CH3CN (50 mL) are added to a round-bottom flask. The mixture is heated to reflux under an N2 atmosphere for 12 h. The mixture is cooled to r.t. and filtered. The filtrate is concentrated, and the residue is purified by flash chromatography (SiO2, CH2Cl2－CH3OH－Et3N as eluent) to give 1-cyclohexyl-4-tosylpiperazine as a white solid in 83% yield (2.67 g).
References
- One-Step Cyclization: Synthesis of N-Heteroalkyl-N′-tosylpiperazines
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