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CAS RN: 719-22-2 | 产品编码: D2256
2,6-Di-tert-butyl-1,4-benzoquinone
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技术规格
| Appearance | Light yellow to Yellow to Orange powder to crystal |
| Purity(GC) | min. 98.0 % |
| Melting point | 66.0 to 69.0 °C |
物性（参考值）
| 熔点 | 67 °C |
| 水溶性 | 不溶 |
| 溶解性（可溶于） | 苯, 乙醇, 甲苯, 甲醇 |
GHS
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| 信号词 | Warning |
| 危险性说明 | H315 : Causes skin irritation. H319 : Causes serious eye irritation. H413 : May cause long lasting harmful effects to aquatic life. |
| 防范说明 | P501 : Dispose of contents/ container to an approved waste disposal plant. P273 : Avoid release to the environment. 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# | DK3970000 |
运输信息
| HS编码* | 2914.69-000 |
应用
Mukaiyama Oxidation-Reduction Condensation
Experimental procedure1): to a mixture of benzoic acid (0.60 mmol) and 2,6-di-tert-butyl-1,4-benzoquinone (0.60 mmol) under argon atmosphere is added, a solution of benzyloxydiphenylphosphine (0.66 mmol) in dichloromethane (0.50 mL) at room temperature. The reaction mixture is stirred for 0.5 h at room temperature. The reaction mixture is quenched by adding water and the aqueous layer is extracted with dichloromethane. The combined organic layer is dried over anhydrous sodium sulfate. After filtration and evaporation, the resulted residue is purified by preparative TLC to afford the corresponding carboxylic ester (77% yield).
References
- 1)Efficient Method for the Preparation of Carboxylic Acid Alkyl Esters or Alkyl Phenyl Ethers by a New-Type of Oxidation–Reduction Condensation Using 2,6-Dimethyl-1,4-benzoquinone and Alkoxydiphenylphosphines
- 2)Preparation of tert-Alkyl Aryl Sulfides from tert-Alcohols via Quinone-mediated Oxidation–Reduction Condensation between tert-Alkyl Diphenylphosphinites and 2-Sulfanyl-1,3-benzothiazole
参考文献