CAS:542-08-5
Molecular Formula:C7H12O3
Molecular Weight:144.17
EINECS:208-798-4
Synonyms:3-oxo-butanoicaci1-methylethylester; 3-Oxobutansαure-1-methylethylester;3-Oxo-butyricacidisopropylester; Acetoaceticacid,isopropylester; acetoaceticacidisopropylester; Butanoicacid,3-oxo-,1-methylethylester; 3-oxobutanoic acid propan-2-yl ester; Isopropyl3-oxobutanoate; Isopropyl3-oxobutyrate
In a 500ml flask equipped with a stirrer, thermometer, and reflux condenser, 150g (2.5mol) of isopropanol and 0.36g of triethylamine were added. 210g (2.5mol) of diethylene ketone was added dropwise at room temperature. The reaction temperature was controlled at 70 ℃ during the process, and the dropwise addition was completed. The temperature was kept at 70 ℃ for 6 hours to complete the reaction. The crude ester was subjected to negative pressure distillation to obtain the final product Isopropyl acetoacetate 343g, with a yield of 95.2% and a content of 99.3%.
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