Zhang Chun-xia
2011
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Journal
Fine chemicals
Abstract
2-Nitrobenzene-1,3-diol was obtained through a series of physical and chemical processes containing sulfonation,nitration,and hydrolysis etc.and treated with dimethyl sulfate to give 1,3-dimethoxy-2-nitrobenzene.It has been shown by investigating various technological conditions mentioned above that resorcinol can be completely two-sulfonated and finally resulting in 2-nitrobenzene-1,3-diol with the yield of 63.5% and the contents over 98.5% when 20% of oleum used as sulfonation reagents and 1,3-dimethoxy-2-nitrobenzene can also be obtained with 75.6% by treating 2-nitrobenzene-1,3-diol with dimethyl sulfate at 80 ℃ for 4 h when the molar ratio of dimethyl sulfate to 2-nitrobenzene-1,3-diol is 2.2∶1.0.