The synthesis of new chromogenic p (o,m,p carboxylazo)Calixarenes derivatives through the couping of diazotized o,m,p aminobenzene carboxylic acid and calixarenes was described.Their structures were comfirmed by IR, 1...The synthesis of new chromogenic p (o,m,p carboxylazo)Calixarenes derivatives through the couping of diazotized o,m,p aminobenzene carboxylic acid and calixarenes was described.Their structures were comfirmed by IR, 1H NMR and elemental analysis.Their chromogenic properties and UV Vis absorption spectra were investigated under different pH conditions.Experimental results show that the synthesized derivatives can be used as new indicators and host展开更多
在室温下,以对氯邻硝基苯胺邻叔丁基对甲基苯酚和亚硝酸钠为原料通过固相重氮偶合反应一步合成了2-硝基-4-氯-2′-羟基-3′-特丁基-5′-甲基偶氮苯。反应时间15 m in,产率达93%。以HPLC分析,其纯度>99%,并用IR和UV光谱等对其结构进...在室温下,以对氯邻硝基苯胺邻叔丁基对甲基苯酚和亚硝酸钠为原料通过固相重氮偶合反应一步合成了2-硝基-4-氯-2′-羟基-3′-特丁基-5′-甲基偶氮苯。反应时间15 m in,产率达93%。以HPLC分析,其纯度>99%,并用IR和UV光谱等对其结构进行了表征和确认。展开更多
文摘The synthesis of new chromogenic p (o,m,p carboxylazo)Calixarenes derivatives through the couping of diazotized o,m,p aminobenzene carboxylic acid and calixarenes was described.Their structures were comfirmed by IR, 1H NMR and elemental analysis.Their chromogenic properties and UV Vis absorption spectra were investigated under different pH conditions.Experimental results show that the synthesized derivatives can be used as new indicators and host
