Characterization of supported heteropoly acid (salt) and its catalytic behavior in synthesis of fructone was written by Zhang, Fumin;Yuan, Chaoshu;Ren, Xiaoqian;Wang, Jun. And the article was included in Huagong Xuebao (Chinese Edition) in 2006.Safety of Ethyl 2-(2-methyl-1,3-dioxolan-2-yl)acetate The following contents are mentioned in the article:
A series of 12-phosphotungstic acid (PW) and its cesium salt catalysts immobilized on various supports such as ultra-stable Y zeolite (USY), dealuminated USY (DUSY), SiO2 and SBA-15 were prepared Their sp. surface area and acid strength were measured, and their catalytic performance was evaluated in the synthesis of fructone by acetalization of Et acetoacetate with ethylene glycol. The high catalytic activity was found over the prepared supported heteropoly compound catalysts in this reaction. However, for the supported PW catalysts, a severe leaching of heteropoly anions into water was observed, leading to their poor reusability. By contrast, the Cs salt of PW catalyst supported on DUSY exhibited very high catalytic activity with high water tolerance and reusability. The conversion of Et acetoacetate of 98.7% with the selectivity of fructone above 97% could be obtained over 30% Cs2.5H0.5 PW/DUSY under the optimal reaction conditions. This study involved multiple reactions and reactants, such as Ethyl 2-(2-methyl-1,3-dioxolan-2-yl)acetate (cas: 6413-10-1Safety of Ethyl 2-(2-methyl-1,3-dioxolan-2-yl)acetate).
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. 1,3-Benzodioxole can be synthesized from catechol with disubstituted halomethanes.Safety of Ethyl 2-(2-methyl-1,3-dioxolan-2-yl)acetate
Referemce:
1,3-Benzodioxole – Wikipedia,
Dioxole | C3H4O2 – PubChem