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Synthesis of diethyl malonate over phosphotungstic acid supported on activated carbon

Jizhong Li

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Abstract

Diethyl malonate was synthesized from malonic acid and ethanol over phosphotungstic acid supported on activated carbon.The influential factors(dosage of catalyst,acid-to-alcohol molar ratio,reaction time) were investigated.Experimental results indicated that the optimum condition was as follows: n(malonic acid) ∶n(ethanol) ∶n(phosphotungstic acid)=1∶3∶0.007,dosage of water-carrying agent =15 mL,reaction time 90 min.Diethyl malonate yield of up to 96.25% was obtained.

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What this paper is about

Diethyl malonate was synthesized from malonic acid and ethanol over phosphotungstic acid supported on activated carbon.The influential factors(dosage of catalyst,acid-to-alcohol molar ratio,reaction time) were investigated.Experimental results indicated that the optimum condition was as follows: n(malonic acid) ∶n(ethanol) ∶n(phosphotungstic acid)=1∶3∶0.007,dosage of water-carrying agent =15 mL,reaction time 90 min.Diethyl malonate yield of up to 96.25% was obtained.

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Available abstract

Diethyl malonate was synthesized from malonic acid and ethanol over phosphotungstic acid supported on activated carbon.The influential factors(dosage of catalyst,acid-to-alcohol molar ratio,reaction time) were investigated.Experimental results indicated that the optimum condition was as follows: n(malonic acid) ∶n(ethanol) ∶n(phosphotungstic acid)=1∶3∶0.007,dosage of water-carrying agent =15 mL,reaction time 90 min.Diethyl malonate yield of up to 96.25% was obtained.

Key concepts: Phosphotungstic acid, Diethyl malonate, Malonic acid, Malonate, Chemistry, Ethanol, Catalysis, Activated carbon

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