Luo, Zhi-chen published the artcileSyhthesis of vanillin 1, 2-propylene glycol acetal with copper p-toluene sulfonate catalyst, COA of Formula: C11H14O4, the publication is Huaxue Shijie (2010), 51(11), 675-677, database is CAplus.
Vanillin-1,2-propylene glycol acetal was synthesized from vanillin and 1,2-propylene glycol using copper p-toluene sulfonate as catalyst and benzene as water stripping agent. The effects of molar ratio of the reactants, catalyst dosage and reaction time on yield were investigated. Copper p-toluene sulfonate showed high catalytic activity, and the catalyst was reused for 3 times. The preferential conditions are as follows: based on 15.2g(0.1 mol) of vanillin, the molar ratio of vanillin to 1,2-propylene glycol is 1: 1.60; the dosage of catalyst is 0.9g, the amount of benzene as water stripping agent is 25 mL; and the reaction time is 2.5 h. The yield can achieve 87%.
Huaxue Shijie 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, COA of Formula: C11H14O4.
Referemce:
https://en.wikipedia.org/wiki/1,3-Benzodioxole,
Dioxole | C3H4O2 – PubChem