Novel process of 1,4-bis(methoxymethyl)-benzene preparation method

The invention provides a novel process of a 1,4-bis(methoxymethyl)-benzene preparation method. The novel process comprises the following steps of: (1) reaction distillation: heating low-boiling leftovers containing p-xylylene dichloride to reach the temperature above 110 DEG C, pumping into a reaction kettle under vacuum; adding sodium methoxide solution to react and distil at temperature below 80 to 100 DEG C, stopping reaction to obtain a crude product while the content of the p-xylylene dichloride residual in a reactant accounts for 0.05 to 0.5% (GC), and distilling to obtain methanol; (2) salt dissolving: adding water to the crude product to dissolve salt; (3) heating reflux: heating for 3 to 5 hours to reach 95 to 105 DEG C; (4) standing and layering to obtain an oil layer and a water layer; (5) rectifying: performing reduced pressure distillation to the oil layer to obtain finished 1,4-bis(methoxymethyl)-benzene and a byproduct finished p-tolualdehyde. The novel process is simple, convenient and stable