Catalytic synthesis of vanillin 1,2-propylene glycol acetal by phosphomolybdic acid was written by Jin, Lie;Zhou, Tong-wu. And the article was included in Huaxue Gongchengshi in 2010.Category: dioxole This article mentions the following:
Vanillin 1,2-propylene glycol acetal was synthesized from vanillin and 1,2-propylene glycol using H3PO3-MoO3-xH2O as the catalyst. Factors influencing the yield, such as the molar ratio of starting materials, time, catalyst species and amount, and different water entraining agents, were studied and the better reaction conditions were determined The factors influencing the synthesis were studied and the optimal reaction conditions were found as follows: a molar ratio of cinnamaldehyde/ethylene glycol = 1.0/1.3, a catalyst dosage of 0.3%, a cyclohexane amount of 15 mL and a reaction time of 4.5 h. The selectivity was above 98% and the product yield was 94.58%. The structure of vanillin 1,2-propylene glycol acetal was identified by means of IR and GC. In the experiment, the researchers used many compounds, for example, 2-Methoxy-4-(4-methyl-1,3-dioxolan-2-yl)phenol (cas: 68527-74-2Category: dioxole).
2-Methoxy-4-(4-methyl-1,3-dioxolan-2-yl)phenol (cas: 68527-74-2) 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.Category: dioxole
Referemce:
1,3-Benzodioxole – Wikipedia,
Dioxole | C3H4O2 – PubChem