Jia Zhi
2002
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Journal
Journal of Shanxi University
Abstract
amino 5 aminomethyl 1 naphthalenesulfonic aci d(Amino methyl Tobias)was used as important intermediates in manufacture of re active azo dyes and dyeing auxiliaries.It had been reported that Amino methyl Tobias was prepared by acetylacylation,aminomethylation and hydrolysis of 2 ami no 1 naphthalenesulfonic acid (Tobias acid).The synthetic steps of the referen ce method were very complexity and need operation in high pressure condition,whi ch have many limitations for operation in laboratory and industry production.In comparison with the reference synthetic conditions,2 amino 5 aminomethyl 1 naphthalenesulfonic acid (Amino methyl Tobias) was prepared only by amino meth ylation and hydrdysis of 2 amino 1 naphthalenesulfonic acid(Tobias acid)in ne wly synthetic conditions,which need not react with acetic anhydride for amin o protection.The method can not only simp lify the synthtic steps but also avoid of high pressure operation;the operation is easier and the reactive conditions is moderate.The yield of 2 amino 5 ami nomethyl 1 naphthalenesulfonic acid(Amino methyl Tobias)was 87.2%.