乙酰丙酸

• 产品号: A10813
• CAS号: 123-76-2
• 分子式: C5H8O3
• 分子量: 116.11522
• 纯 度: 98%

产品别名

• 标题: Levulinic acid
• IUPAC标准名: 4-oxopentanoic acid
• IUPAC传统名: levulinic acid
• 别名: 4-Ketopentanoic acid; 4-Oxopentanoic acid

产品登记号

• Beilstein号: 506796
• CAS号: 123-76-2
• MDL号: MFCD00002796
• EC号: 204-649-2
• 默克索引号: 145472

产品性质

• 纯度: 98%
• 沸点: 245-246°C
• 密度: 1.134
• 闪点: 137°C(278°F)
• 熔点: 26-31°C
• 折射率: 1.4415
• GHS危险声明: H314-H318-H302
• 欧盟危险性物质标志: X
• 欧盟危险性物质标志: 腐蚀性(Corrosive) (C)
• GHS警示性声明: P280-P305+P351+P338-P309-P310
• 危险公开号: 22-34
• RTECS编号: OI1575000
• 安全公开号: 26-36/37/39-45
• 保存注意事项: Light Sensitive
• TSCA收录: 是
• 联合国危险货物等级: 8
• 联合国危险货物编号: UN3261
• 联合国危险货物包装类别(PG): III

参考文献

• Alcohols and phenols can be protected as levulinate (Lev) esters. Ester formation has been brought about, e.g. by reaction with an alcohol in the presence of DCC and DMAP: Tetrahedron Lett., 4875 (1976); 23, 2615 (1982). The same references describe facile, selective cleavage by the use of hydrazine hydrate in pyridine/acetic acid. For use of 2-Chloro-1-methylpyridinium iodide, A12820, in the formation of Lev esters, see: Tetrahedron Lett., 21, 381 (1980). Alternative cleavage methods include: borohydride in water: J. Am. Chem. Soc., 97, 1614 (1975); MeMgI: benzoate esters unaffected: J. Chem. Soc., Chem. Commun., 681 (1992); sodium sulfite/ bisulfite under neutral conditions, effective for Lev esters of nucleosides, carbohydrates and steroids: Chem. Lett., 585 (1988). Lev esters have also been prepared using 2-Ethoxy-1-ethoxycarbonyl-1,2-dihydroquinoline, A13724: Tetrahedon Lett., 23, 2615 (1982).