Green cyclic acetals production by glycerol etherification reaction with benzaldehyde using cationic acidic resin

Green Processing and Synthesis

article

Kariyn Yamamoto¹  Arina Miki Kiyan¹  Jackeline Camargo Bagio¹  Kayque Araújo Borges Rossi¹  Francielle Delabio Berezuk²  Márcio Eduardo Berezuk¹ 

[1] Federal Technological University of Paraná;Maringá State University

关键词: acidic resin;    benzaldehyde;    cyclic acetals;    etherification;    glycerol;   

DOI  :  10.1515/gps-2018-0059

来源: De Gruyter

【 摘 要 】

In this paper, we investigated the effect of temperature, glycerol etherification concentration with benzaldehyde, organic solvent and catalyst reuse effects using a cationic acidic resin as catalyst for production of green cyclic acetals of high commercial value. The best reaction conditions show a conversion above 93% of glycerol and yield to cyclic acetals above 61%. The highest selectivity elements observed were 2-phenyl-1,3-dioxan-5-ol, in cis and trans isomer forms reaching 80%. The temperature had a positive effect increasing on glycerol conversion, though it also favored the formation of undesired compounds. A high concentration of benzaldehyde reactant kept the selectivity values constant but increased glycerol conversion resulting in higher yields, mainly when organic solvents were used. Reuse of the catalyst resulted in a slight decrease in yield values, which demonstrated stability and durability of the catalyst used.

【 授权许可】

CC BY