Catalytic performance of phosphotungstic acid (salt) supported on SiO2 for acetalization of ethyl acetoacetate with glycol was written by Zhang, Fumin;Yuan, Chaoshu;Wang, Jun. And the article was included in Shiyou Huagong in 2005.Computed Properties of C8H14O4 The following contents are mentioned in the article:
12-Phosphotungstic acid (PW12) and/or its Cs salt and K salt supported on SiO2 were prepared by impregnation at ambient temperature The salts thus prepared were cesium tungstophosphate (Cs2.5H0.5PW12O40) and potassium tungstophosphate (K2.5H0.5PW12O40). Their catalytic performances in synthesis of fructone (i.e., 2-methyl-1,3-dioxolane-2-acetic acid Et ester), by acetalization of Et acetoacetate with glycol were investigated. Their properties were characterized by means of X-ray diffraction (XRD), N2 adsorption and Hammett indicator. The catalyst stability was evaluated by treatment with water, during which concentration of leached heteropoly acid or salt was measured by UV-visual spectrophotometer. The catalyst activity rose with increase of PW12 (Cs – or K -salt) loading, and conversion of Et acetoacetate became steady when loading was more than 30%. For PW12/SiO2, Cs2.5 H0.5 PW12/SiO2 and K2.5H0.3 PW12/SiO2 catalysts, selectivity of fructone was 97%, and conversions of Et acetoacetate was 69.8%, 68.6% and 68.4%, resp. The treatment of catalysts with water showed that deactivation of catalyst related correspondingly with the amount of leached active heteropoly species, and stabilities of three catalysts were in the order of 30% Cs2.5H0.5 PW12/SiO2 30% K2.5H0.5PW12/SiO2>>30% PW12/SiO2. This study involved multiple reactions and reactants, such as Ethyl 2-(2-methyl-1,3-dioxolan-2-yl)acetate (cas: 6413-10-1Computed Properties of C8H14O4).
Ethyl 2-(2-methyl-1,3-dioxolan-2-yl)acetate (cas: 6413-10-1) belongs to dioxole derivatives. Dioxoles, particularly fluorinated dioxoles, are used as co-monomers to make polymers that find use in forming protective coatings for chemical resistance. Dioxole functionalized metal-organic frameworks have also been recently reported.Computed Properties of C8H14O4
Referemce:
1,3-Benzodioxole – Wikipedia,
Dioxole | C3H4O2 – PubChem