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CAS RN: 1125-88-8 | 產品號碼: B1197
Benzaldehyde Dimethyl Acetal
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| 產品號碼 | B1197 |
| 純度/分析方法 | >98.0%(GC) |
| 分子式 / 分子量 | C__9H__1__2O__2 = 152.19 |
| 外觀與形狀（20°C） | Liquid |
| 儲存條件 | Room Temperature (Recommended in a cool and dark place, <15°C) |
| 儲存在惰性氣體下 | Store under inert gas |
| 應避免的情況 | Moisture Sensitive |
| CAS RN | 1125-88-8 |
| Reaxys-RN | 2044501 |
| PubChem Substance ID | 87564133 |
| SDBS (AIST Spectral DB) | 18176 |
| MDL編號 | MFCD00008491 |
產品規格
| Appearance | Colorless to Almost colorless clear liquid |
| Purity(GC) | min. 98.0 % |
性質
| 沸點 | 196 °C |
| flp | 71 °C |
| 比重 | 1.02 |
| 折射率 | 1.49 |
GHS
| 圖形表示 |
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| 信號詞 | Warning |
| 危險性說明 | H302 : Harmful if swallowed. H319 : Causes serious eye irritation. H227 : Combustible liquid. |
| 防範說明 | P501 : Dispose of contents/ container to an approved waste disposal plant. P270 : Do not eat, drink or smoke when using this product. P210 : Keep away from heat/sparks/open flames/hot surfaces. No smoking. 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. P301 + P312 + P330 : IF SWALLOWED: Call a POISON CENTER/doctor if you feel unwell. Rinse mouth. P403 + P235 : Store in a well-ventilated place. Keep cool. |
相關法規
| RTECS # | CU5774000 |
運輸資料
| HS編碼* | 2911.00-000 |
Application
TCI Practical Example: Regioselective Benzylidene Acetal Protection of the β-glucoside.
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Used Chemicals
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Procedure
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To a solution of salicin (200 mg, 0.7 mmol) in DMF (2 mL) was added benzaldehyde dimethyl acetal (125 µL, 0.8 mmol) and p-TsOH・H2O (12 mg, 0.07 mmol) and the mixture was stirred at 80 °C for 2 hours. The reaction was quenched with triethylamine (19 µL, 0.14 mmol) and the solvent was removed under reduced pressure. The residue was purified by column chromatography (ethyl acetate:hexane = 10:90 - 85:15) to give 1 as a white solid (165 mg, 63%).
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Experimenter’s Comments
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The reaction mixture was monitored by UPLC.
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Analytical Data
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4,6-O-Phenylmethylidene-D-salicin (1)
1H NMR (270 MHz, DMSO); δ 7.46-7.37 (m, 6H), 7.24-7.19 (m, 1H), 7.11 (d, J = 7.6 Hz, 1H), 7.02 (t, J = 7.6 Hz, 1H), 5.65-5.61 (m, 2H), 5.42 (d, J = 5.4 Hz, 1H), 5.05-4.98 (m, 2H), 4.65 (dd, J = 5.4, 14 Hz, 1H), 4.48 (dd, J = 6.2, 14 Hz, 1H), 4.23 (dd, J = 4.32, 9.45 Hz, 1H), 3.76-3.38 (m, 5H).
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Lead Reference
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- Water-Soluble Organometallic Catalysts from Carbohydrates. 2. A Strategy for the Preparation of Catalysts with Pendant Quaternary Ammonium Groups Using D-Salicin
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