It is pointed out that preparation of 2,5-TDAs starting from o-toluidine (OT) through diazo-coupling of OT and reductive hydrogenative cleavage of OT azo compound is the prior technology.
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释义
结果表明,以邻甲苯胺为原料经重氮偶合、还原氢解是合成2,5-二氨基甲苯及其系列产品优先的技术路线。
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