Key words: propanol-2, vanillin, supercritical conditions, phenols, gas chromatography
The sequence of product formation and kinetic regularities of vanillin transformation in propanol-2 medium at different temperatures and duration of the process in a static mode are investigated. The vanillin conversion products were determined using gas chromatography-mass-spectrometry method. At a high degree of vanillin conversion (up to 100 %), a relatively small number of compounds are formed, the main of which are substituted phenols and their derivatives, such as vanillyl alcohol and its isopropyl ether, guaiacol, creosol (2-methoxy-4-methylphenol), and homocatechol (3,4- dihydroxytoluene). A scheme of reci procal transformations of intermediate compounds is proposed.
doi:10.34984/SCFTP.2020.15.3.008