2012•Journal of Shangqiu Normal UniversityRequires access

Catalytic synthesis of butyraldehyde 1,2-propanediol acetal with H_4SiW_(12)O_(40)/silica gel

Dongming Wang

Abstract

Butyraldehyde 1,2-propanediol acetal was synthesized f rom butyraldehyde and 1,2-propanediol in the presence of H4SiW12O40/SG.The factors influencing the synthesis were investigated.The optimum conditions were found.The optimum conditions were as follows: molar ratio of butyraldehyde to 1,2-propanediol is 1∶1.3,the mass of the catalyst is 0.1g,the volume of cyclohexane as the water-carrying agent is 4 mL,and the reaction time is 30min.H4SiW12O40/SG is an excellent catalyst for synthesizing butyraldehyde 1,2-propanediol acetal and the product yield can reach 82.6%.

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Key concepts: Butyraldehyde, Acetal, Propanediol, Cyclohexane, Chemistry, Catalysis, Molar ratio, Yield (engineering)