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CAS RN: 26412-87-3 | 产品编码: P0998
Pyridine - Sulfur Trioxide Complex
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技术规格
| Appearance | White to Light yellow powder to crystal |
| Purity(Ethanolysis Method) | min. 95.0 % |
| NMR | confirm to structure |
物性（参考值）
GHS
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| 信号词 | Danger |
| 危险性说明 | H302 : Harmful if swallowed. H314 : Causes severe skin burns and eye damage. H290 : May be corrosive to metals. |
| 防范说明 | P501 : Dispose of contents/ container to an approved waste disposal plant. P260 : Do not breathe dusts or mists. P270 : Do not eat, drink or smoke when using this product. P234 : Keep only in original container. P264 : Wash skin thoroughly after handling. P280 : Wear protective gloves/ protective clothing/ eye protection/ face protection. P390 : Absorb spillage to prevent material damage. P303 + P361 + P353 : IF ON SKIN (or hair): Take off immediately all contaminated clothing. Rinse skin with water/shower. P301 + P330 + P331 : IF SWALLOWED: Rinse mouth. Do NOT induce vomiting. P363 : Wash contaminated clothing before reuse. P301 + P312 + P330 : IF SWALLOWED: Call a POISON CENTER/doctor if you feel unwell. Rinse mouth. P304 + P340 + P310 : IF INHALED: Remove person to fresh air and keep comfortable for breathing. Immediately call a POISON CENTER/doctor. P305 + P351 + P338 + P310 : IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing. Immediately call a POISON CENTER/doctor. P406 : Store in corrosive resistant container with a resistant inner liner. P405 : Store locked up. |
相关法规
运输信息
| UN编号 | UN3261 |
| 类别 | 8 |
| 包装类别 | III |
| HS编码* | 2933.39-000 |
应用
TCI Practical Example: Synthesis of the Aldehyde Utilizing the Parikh-Doering Oxidation
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Used Chemicals
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Procedure
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To a solution of 3,5-dibenzyloxybenzyl alcohol (1.0 g, 3.1 mmol), N,N-diisopropylethylamine (2.7 mL, 15.6 mmol, 5.0 equiv), and DMSO (2.22 mL, 31 mmol, 10 equiv) in dichloromethane (10 mL) was added SO3·Py (1.49 g, 9.4 mmol, 3.0 equiv) at 0 °C. The reaction mixture was stirred at same temperature for 1 hour and quenched with Na2S2O3 aq. (20 mL) was added to the reaction mixture. The aqueous layer was extracted with dichloromethane (20 mL) and washed brine. The organic phase was concentrated under reduced pressure and the residue was purified by column chromatography (ethyl acetate:hexane = 0:1 - 1:1 on silica gel) to give 3,5-dibenzyloxybenzaldehyde as a white solid (850 mg，y. 85%).
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Experimenter’s Comments
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The reaction mixture was monitored by LC.
This reaction produces dimethyl sulfide, which gives off a bad smell. So that it is recommended to treat this reaction in a fume hood.
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Analytical Data
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3,5-dibenzyloxybenzaldehyde
1H NMR (270 MHz, CDCl3); δ 9.90 (s, 1H), 7.45-7.32 (m, 10H), 7.12 (d, J = 2.1 Hz, 2H), 6.87 (t, 1H, J = 2.1 Hz), 5.93 (s, 4H).
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Lead Reference
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- Bis(benzylamine) monomers: One-pot preparation and application in dendrimer scaffolds for removing pyrene from aqueous environments
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Other References
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- CO2-Catalyzed Oxidation of Benzylic and Allylic Alcohols with DMSO
应用
with DMSO or LiAlH4
References
- E. J. Corey, K. Achiwa, J. Org. Chem. 1969, 34, 3667.
- D. S. Watt, E. J. Corey, Tetrahedron Lett. 1972, 4651.
- J. R. Parikh, W. von E. Doering, J. Am. Chem. Soc. 1967, 89, 5505.
- Y. Hamada, T. Shioiri, Chem. Pharm. Bull. 1982, 30, 1921.
- D. A. Evans, J. Bartroli, Tetrahedron Lett. 1982, 23, 807.
参考文献
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