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化工学报  2015 

AB型羟基改性PBO单体及其合成新技术

DOI: 10.11949/j.issn.0438-1157.20141644, PP. 1955-1963

Keywords: AB型单体,合成,有机化合物,制备,2-羟基-4-(5-硝基-6-羟基苯并,唑-2-基)苯甲酸,2-羟基-4-(5-氨基-6-羟基苯并,唑-2-基)苯甲酸,羟基改性PBO

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Abstract:

提出单羟基改性PBO及其AB型单体的分子结构,研究了以4-氨基-6-硝基间苯二酚盐酸盐(ANR·HCl)和羟基对苯二甲酸(HTA)为原料直接缩环合制备2-羟基-4-(5-硝基-6-羟基苯并唑-2-基)苯甲酸(HNBA)、再还原合成AB型单体:2-羟基-4-(5-氨基-6-羟基苯并唑-2-基)苯甲酸(HABA)的新方法。结果表明:缩环合制备的HNBA,其纯度96.81%、收率69.25%;进一步还原合成出纯度>98%的单体HABA,以ANR·HCl计的总收率为58.38%;具有原料易得、步骤短、条件缓和、产物稳定性优异以及缩聚基团完全等当比等性质。合成的新单体HABA及其前体HNBA,经FT-IR和MS以及NMR等分析和表征,证实了其分子结构。

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