Maximum quantity allowed is 999
请选择数量
CAS RN: 2098851-56-8 | 產品號碼: U0113
Sulfur Dioxide 1-Methylpyrrolidine Adduct
×
![]()
×
* 以上價格已含運費關稅等但一些需要海運以及乾冰運輸的產品除外,詳情請與
當地經銷商
洽詢。
* TCI會時常優化儲存條件,儲存溫度請以在線目錄為準，敬請留意。
| 產品號碼 | U0113 |
| 純度/分析方法 | >96.0%(qNMR) |
| 分子式 / 分子量 | C__5H__1__1NO__2S = 149.21 |
| 外觀與形狀（20°C） | Liquid |
| 儲存條件 | Frozen (<0°C) |
| 儲存在惰性氣體下 | Store under inert gas |
| 應避免的情況 | Air Sensitive,Heat Sensitive |
| CAS RN | 2098851-56-8 |
| PubChem Substance ID | 468593081 |
產品規格
| Appearance | Light yellow to Amber to Dark green clear liquid |
| Purity(qNMR) | min. 96.0 % |
| NMR | confirm to structure |
性質
GHS
| 圖形表示 |
|
| 信號詞 | Danger |
| 危險性說明 | H315 : Causes skin irritation. H319 : Causes serious eye irritation. H225 : Highly flammable liquid and vapor. |
| 防範說明 | P501 : Dispose of contents/ container to an approved waste disposal plant. P240 : Ground/bond container and receiving equipment. P210 : Keep away from heat/sparks/open flames/hot surfaces. No smoking. P233 : Keep container tightly closed. P243 : Take precautionary measures against static discharge. P241 : Use explosion-proof electrical/ ventilating/ lighting/ equipment. P242 : Use only non-sparking tools. P264 : Wash skin thoroughly after handling. P280 : Wear protective gloves/ eye protection/ face protection. P370 + P378 : In case of fire: Use dry sand, dry chemical or alcohol-resistant foam to extinguish. 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. P303 + P361 + P353 : IF ON SKIN (or hair): Take off immediately all contaminated clothing. Rinse skin with water/shower. P332 + P313 : If skin irritation occurs: Get medical advice/ attention. P403 + P235 : Store in a well-ventilated place. Keep cool. |
相關法規
運輸資料
| UN編號 | UN1993 |
| 類別 | 3 |
| 包裝類別 | II |
| HS編碼* | 2933.99-000 |
Application
TCI Practical Example: Direct Synthesis of Lithium Pyridine Sulfinate Using TIMSO
-
Used Chemicals
-
- 5-Bromo-2-methoxypyridine [B2398]
- Sulfur Dioxide 1-Methylpyrrolidine Adduct (= TIMSO) [U0113]
- Butyllithium (ca. 15% in Hexane, ca. 1.6mol/L)
- THF
-
Procedure
-
5-Bromo-2-methoxypyridine (1.00 g, 5.32 mmol) in THF (30 mL) was stirred at -78 °C for 5 minutes and butyllithium (ca. 1.6mol/L in hexane, 3.66 mL, 5.85 mmol) was added to the solution and stirred further for 40 minutes at same temperature. Then, TIMSO (1.06 g, 6.38 mmol) was added and stirred at room temperature for 30 minutes. The precipitated solid was collected by filtration and washed with acetone (2 x 20 mL) and diethyl ether (2 x 20 mL) to give 1 as a white solid (895 mg, 94% yield).
-
Experimenter’s Comments
-
The reaction mixture was monitored by NMR.
-
Analytical Data
-
Lithium 6-Methoxypyridine-3-sulfinate (1)
1H NMR (270 MHz, D2O); δ 8.09 (d, J = 1.9 Hz, 1H), 7.77 (dd, J = 6.2, 2.2 Hz, 1H), 6.80 (d, J = 8.1 Hz, 1H), 3.77 (s, 3H).
-
Lead Reference
-
- Pyridine sulfinates as general nucleophilic coupling partners in palladium-catalyzed cross-coupling reactions with aryl halides
-
Other Reference
-
- Catalyst Selection Facilitates the Use of Heterocyclic Sulfinates as General Nucleophilic Coupling Partners in Palladium-Catalyzed Coupling Reactions
Application
Direct Synthesis of Lithium Pyridinesulfinate using TIMSO
To a solution of 5-bromo-2-methoxypyridine (2.5 mL, 19.3 mmol) in THF (100.0 mL) at -78 °C, n-BuLi (8.2 mL, 2.12 M in hexane, 17.4 mmol, 0.9 equiv.) is added slowly. The mixture is stirred for 40 minutes before U0113 (1.0 equiv.) is added slowly. After complete addition, the solution is allowed to warm to room temperature and the crude product is collected by vacuum filtration and washed with acetone (2 x 20 mL) and Et2O (2 x 20 mL) to yield the lithium pyridinesulfinate (3.4 g, 99%).
References
- Pyridine sulfinates as general nucleophilic coupling partners in palladium-catalyzed cross-coupling reactions with aryl halides
- Catalyst Selection Facilitates the Use of Heterocyclic Sulfinates as General Nucleophilic Coupling Partners in Palladium-Catalyzed Coupling Reactions
TCIMail
產品文件 （部分產品的分析圖譜無法提供，敬請諒解。）
SDS
請選擇語言。
請求的SDS不可用。
如需更多幫助，請聯繫我們 。
產品規格
檢驗報告(CoA)及其他文檔
請輸入批號
輸入的批號不正確
示例 CoA
可下載CoA示例。注：該示例可能非最新批次的CoA。
目前沒有該產品的 CoA 示例。
分析圖譜
請輸入批號
輸入的批號不正確
很抱歉，您搜索的分析圖譜無法提供。