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CAS RN: 126-30-7 | 產品號碼: D0791
2,2-Dimethyl-1,3-propanediol
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| 產品號碼 | D0791 |
| 純度/分析方法 | >98.0%(GC) |
| 分子式 / 分子量 | C__5H__1__2O__2 = 104.15 |
| 外觀與形狀（20°C） | Solid |
| 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 | Hygroscopic |
| CAS RN | 126-30-7 |
| Reaxys-RN | 605291 |
| PubChem Substance ID | 87567416 |
| SDBS (AIST Spectral DB) | 2229 |
| Merck Index(14) | 6458 |
| MDL編號 | MFCD00004685 |
產品規格
| Appearance | White to Almost white powder to crystal |
| Purity(GC) | min. 98.0 % |
| Melting point | 127.0 to 130.0 °C |
| Solubility in Methanol | almost transparency |
性質
| 熔點 | 128 °C |
| 沸點 | 210 °C |
| 水溶性 | Soluble |
| Degree of solubility in water | 830 g/l 20 °C |
GHS
| 圖形表示 |
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| 信號詞 | Warning |
| 危險性說明 | H315 : Causes skin irritation. H319 : Causes serious eye irritation. |
| 防範說明 | 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. |
相關法規
| RTECS # | TY5775000 |
運輸資料
| HS編碼* | 2905.39-000 |
Application
TCI Practical Example: Acetal Protection of an Aldehyde
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Used Chemicals
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Procedure
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Furfural (1.66 mL, 20 mmol) was dissolved in toluene (30 mL) and then 2,2-dimethyl-1,3-propanediol (2.6 g, 25 mmol) and p-TsOH·H2O (30 mg, 0.17 mmol) were added. A Dean-Stark apparatus was attached and the reaction mixture was stirred for 3 h at reflux temperature. After adding ethyl acetate (50 mL), the organic layer was washed with brine (30 mL). The organic layer was dried with anhydrous sodium sulfate and concentrated under reduced pressure. Purification of the crude product by silica gel chromatography (hexane:ethyl acetate = 10:1) afforded 1 (3.2 g, 88% yield) as a yellow oil.
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Experimenter’s Comments
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The reaction solution was monitored by UPLC.
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Analytical Data
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Compound 1
1H NMR (400 MHz, CDCl3); δ 7.45 (m, 1H), 6.46 (m, 1H), 6.37 (m, 1H,), 5.48 (s, 1H), 3.77 (d, J = 10.8 Hz, 2H), 3.64 (d, J = 10.6 Hz, 2H), 1.28 (s, 3H), 0.79 (s, 3H).
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Other Reference
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- Gold(i)-catalysed synthesis of conjugated trienes
考研文獻
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產品規格
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