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以对硝基甲苯为原料，经氧化还原、溴化、重氮化去氨基，甲氧基化反应制得３，５二甲氧基苯甲醛，总收率在５１％以上．
To p-nitrotoluene as raw material, the redox, bromination, diazotization deamination, methoxy reaction 3,5-dimethoxybenzaldehyde, the total yield of 51% or more.