Liu, Yu-ping published the artcileSynthesis of vanillin propylene glycol acetal catalyzed by NaHSO4, Synthetic Route of 68527-74-2, the publication is Jingxi Huagong (2004), 21(11), 831-832, 846, database is CAplus.
Synthesis of vanillin propylene glycol acetal (I) was studied. Factors influencing the yield, such as different dehydrating agents, catalyst amounts, mole ratio of materials, were discussed and the better reaction conditions were determined Thus, 0.48 mol propylene glycol reacted with 0.2 mol vanillin in the presence of 1 g NaHSO4 as catalyst and 100 mL benzene to give I in 85.2% yield. The structure of I was identified by means of GC, refractive index, IR and GC-MS.
Jingxi Huagong published new progress about 68527-74-2. 68527-74-2 belongs to dioxole, auxiliary class Dioxolane,Benzene,Phenol,Ether, name is 2-Methoxy-4-(4-methyl-1,3-dioxolan-2-yl)phenol, and the molecular formula is C11H14O4, Synthetic Route of 68527-74-2.
Referemce:
https://en.wikipedia.org/wiki/1,3-Benzodioxole,
Dioxole | C3H4O2 – PubChem