3,7-diethyl-3,7-dimethyl-4,6-Nonanedione 化学特性,用途語,生産方法
製造方法
Under nitrogen protection, N,N'-dimethoxy-N,N'-dimethylmalonamide (76.1g, 0.4mol), B(C6F5)3(20.5g ,0.04mol), and 380mL 2-methyltetrahydrofuran were added to reaction vial. Lower the temperature to -20°C, 587mL 1.5mol/L 3-methyl pentane magnesium chloride 2-methyl tetrahydrofuran solution (0.88mol) was added dropwise at this temperature and then slowly raise the temperature to 0°C. React for 1 hour, add dropwise saturated ammonium chloride aqueous solution to quench and extract the aqueous phase with ethyl acetate, combine the organic phases and concentrate, heat up and vacuum rectify under reduced pressure. Finally, collect fractions at 145-152°C to obtain 3,7-diethyl-3,7-dimethyl-4,6-Nonanedione.
参考文献
[1] Spijksma G, et al. Chemistry of 2,2,6,6,-Tetramethyl-3,5-heptanedione (Hthd) Modification of
Zirconium and Hafnium Propoxide Precursors. Inorg. Chem., 2006; 45: 4938–4950.
3,7-diethyl-3,7-dimethyl-4,6-Nonanedione 上流と下流の製品情報
原材料
準備製品