What are the uses of 1,3-Dimethoxybenzene?

1,3-Dimethoxybenzene (1,3-DMB) is a volatile aromatic compound found in port wine and is commonly used as a solvent, flavoring and fragrance. 1,3-Dimethoxybenzene has a sweet medicinal taste with hazelnut, resinous and woody notes. The threshold values were 21 and 47 µg l-1 in model wine and port wine, respectively. Quantitative gas chromatography-mass spectrometry analysis using a selected characteristic ion (m/z 138) showed that the 1998 Young Port contained up to 3 µg l-1 of this compound, while the 1999 Port contained Contains up to 20 µg l-1 of this compound.

organic synthesis

The polycondensation reaction of 1,3-DMB and TeCl4 was carried out in 1,4-dioxane at 60 °C without using a catalyst with a feed ratio of 1,3-DMB/TeCl4 = 1/10. After reacting for 48 hours, poly(1,3-DMB-co-Te) with Mn = 45100 and Mw/Mn = 1.89 was obtained, with a yield of 75%, and HCl was released at the same time. 1 H NMR, IR, and X-ray fluorescence spectra showed that poly(1,3-DMB-co-Te) has a partially branched backbone. This polymer has good solubility, film-forming ability, high thermal stability, and high refractive index (1.769 at 0.6328 ¯m). Here, we report a novel condensation reaction using 1,3-DMB as the A2-type monomer and tetrachlorotellurium (TeCl4) as the B2-type monomer to produce poly(phenylene tellurium), as shown in Scheme 1 .

electrochemical oxidation

A new polymer material was obtained by electrochemical oxidation of 1,3-DMB in dry acetonitrile on a platinum electrode. Shiny golden polymer deposits that are insoluble in most common solvents were observed on the platinum surface. The polymerization process follows a multi-step, autocatalytic mechanism, undergoing transient nucleation and two-dimensional growth processes in the initial stages of film formation. Scanning electron microscopy (SEM) revealed the presence of two distinct layers during electrodeposition: a smooth, dense thin layer with an average thickness of 50 nanometers; and a porous, thick, stable and weakly adherent layer. . These studies revealed the mechanism of electrooxidative polymerization of 1,3-DMB and subsequent formation of polymer films on the surface of platinum electrodes.

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