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CAS RN: 14338-32-0 | 产品编码: C0903
2-Chloro-1-methylpyridinium Iodide
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| 规格 | 单价 | 同一天 | 2-3个工作日 | 左侧以上货期 | 数量 |
货期信息
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|---|---|---|---|---|---|---|
| 25G |
S$103.50
|
38 | 9 | 下单后约1周内可以发货 |
|
技术规格
| Appearance | Light yellow to Amber to Dark green powder to crystal |
| Purity(HPLC) | min. 95.0 area% |
| Purity(Nonaqueous Titration) | min. 98.0 % |
| Solubility in Water | almost transparency |
物性（参考值）
GHS
| 象形图 |
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| 信号词 | Warning |
| 危险性说明 | H315 : Causes skin irritation. H319 : Causes serious eye irritation. |
| 防范说明 | 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. |
相关法规
运输信息
| HS编码* | 2933.39-000 |
应用
TCI Practical Example: Peptide coupling reagent: Mukaiyama condensation reagent
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Used Chemicals
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Procedure
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Boc-Pro-OH (1.65 g, 7.65 mmol), 2-chloro-1-methylpyridinium iodide (1.95 g, 7.65 mmol) were added to solution of H-Phe-OMe･HCl (1.50 g，6.95 mmol) in dichloromethane (30 mL) at room temperature and triethylamine (3.40 mL, 24.3 mmol) was added dropwise in 3 min at 5 to 10 °C. After stirring for 3 h, solvent was removed under reduced pressure and the residue was dissolved in ethyl acetate and washed with 10% citric acid aq. (30 mL × 3), 5% sodium bicarbonate solution aq. (30 mL × 3) and brine (30 mL). The organic layer was dried over anhydrous sodium sulfate and filtered. After the removal of solvent under reduced pressure, the given crude was purified by column chromatography (hexane : EtOAc = 2 : 1) to give Boc-Pro-Phe-OMe (2.37 g，91%) as a slightly yellowish solid.
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Experimenter's Comments
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Consumption of stating material and formation of product was monitored by LCMS.
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Analytical Data（Boc-Pro-Phe-OMe）
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1H NMR (400 MHz, DMSO-d6); δ 8.17–8.27 (m, 1H), 7.19–7.29 (m, 5H), 4.42–4.53 (m, 1H), 4.00–4.13 (m, 1H), 3.56–3.61 (m, 3H), 3.18–3.38 (m, 2H), 2.90–3.08 (m, 2H), 1.91–2.11 (m, 1H), 1.56–1.71 (m, 3H), 1.15-1.40 (m, 9H).
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Lead Reference
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- A facile synthesis of carboxamides by using 1-methyl-2-halopyridinium iodides as coupling reagents
应用
A Mukaiyama Condentation Reagent
Experimental procedure3): To a solution of monoallyl malonate (5.22 g, 36.25 mmol) in dichloromethane (100 mL) is added 2-chloro-1-methylpyridinium iodide (13.90 g, 54.38 mmol), followed by N-methylaniline (4.31 mL, 39.88 mmol). The mixture is cooled to 0 °C and triethylamine (25.2 mL, 181.3 mmol) is added dropwise. The resulting mixture is stirred at 0 °C for 5 min, then allowed to warm to room temperature and stirred at this temperature for 30 min. The reaction mixture is diluted with aq. HCl (10%, 100 mL). The organic phase is separated, washed with aq. NaHCO3 (100 mL) and brine (100 mL), then dried (MgSO4) and concentrated in vacuo. Flash column chromatography [Petrol:EtOAc 2:1] affords 1 (7.78 g, 92%) as a pale yellow oil.
References
- 1) A CONVENIENT METHOD FOR THE SYNTHESIS OF CARBOXYLIC ESTERS
- 2) A FACILE SYNTHESIS OF CARBOXAMIDES BY USING 1-METHYL-2-HALOPYRIDINIUM IODIDES AS COUPLING REAGENTS
- 3) Asymmetric Decarboxylative Allylation of Oxindoles
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