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CAS RN: 126-30-7 | 产品编码: D0791
2,2-Dimethyl-1,3-propanediol
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技术规格
| 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 |
物性（参考值）
| 熔点 | 128 °C |
| 沸点 | 210 °C |
| 水溶性 | 可溶 |
| 在水中的溶解度 | 830 g/l 20 °C |
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
| RTECS# | TY5775000 |
运输信息
| HS编码* | 2905.39-000 |
应用
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
参考文献
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化学品安全说明书(SDS)
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技术规格
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