第 43 卷第 4 期Vol. 43 No. 4
2013 年 8 月Aug 2013

所属栏目:功能材料

四对硝基苯基卟啉和四对氨基苯基卟啉的合成
王晓敏,赵玉厚,王素敏,高引娣 (西安工业大学 材料与化工学院,陕西 西安 710032)
摘 要:分别采用苯基卟啉硝化法(两步法)和对硝基苯甲醛直接合成法合成了四对硝基苯基卟啉(TNPP)。苯基卟啉硝化法首先采用Alder方法合成四苯基卟啉,然后以发烟硝酸为硝化试剂,将苯环对位硝化,反应产物是一硝化、二硝化、三硝化和四硝化产物的混合物,难分离,而且此路线腐蚀性强,操作困难,不宜大规模制备。对硝基苯甲醛直接合成法,以丙酸做反应溶剂,使反应活性降低,从而避免了更多的副反应,反应结束后,直接过滤即可得到四对硝基苯基卟啉,收率为22%。再将TNPP用二水合氯化亚锡在盐酸中还原得到四对氨基苯基卟啉(TAPP),还原收率为60%。IR、1H NMR、元素分析等证实产物结构。紫外可见吸收光谱和荧光光谱显示相对于四苯基卟啉,吸电子的硝基和给电子的氨基均使其Q带和B带的吸收位置红移,并使其发光位置也明显红移。
关键词:合成;卟啉;四对硝基苯基卟啉;四对氨基苯基卟啉
中图分类号:TQ24、O621.3  文献标识码:A  文章编号:1009-9212(2013)04-0057-06
Synthesis of Tetra(4-aminophenyl)porphyrin and Tetra(4-nitrophenyl)porphyrin
WANG Xiao-min,ZHAO Yu-hou,WANG Su-min,GAO Yin-di (School of Materials and Chemical Engineering,Xi′an Technological University,Xi′an 710032,China)
Abstract:Porphyrins play an important role in materials science,special function of analytical reagents,electrochemicals and life science. Preparations of tetra(4-nitrophenyl)porphyrin(TNPP)starting from benzaldehyde(method 1)and from nitrobenzaldehyde(method 2)were investigated. In method 1,the tetraphenyl porphyrin was synthesized by the reaction of benzaldehyde with pyrrole and then nitrated by concentrated sulfuric acid and fuming nitric acid. The nitration products include mono-,di-,tri- and tetra-nitrophenyl porphyrin,which are uneasy to be separated. Moreover,strong corrosive acids make it difficult for large scale production. In method 2 when the reaction of nitrobenzaldehyde with pyrrole was conducted in propionic acid,many side reactions could be avoided,thus making the work-up simple. Reduction of TNPP with stannous chloride hydrate in hydrochloric acid resulted in tetra(4-aminophenyl)porphyrin in 60% yield. The chemical structures were characterized by IR,1H NMR and elemental analysis.
Key words:synthesize;porphyrin;tetra(4-aminophenyl)porphyrin;tetra(4-nitrophenyl)porphyrin
基金项目:陕西省自然科学基金资助项目(2013JM6012),陕西省教育厅专项科研计划项目(11JK0800),大学生创新创业训练计划项目(201210702015,201210702017)。
作者简介:王晓敏(1988-),女,内蒙古巴彦淖尔人,硕士,研究方向:超分子化学。(E-mail:xiaominwangxagy@163.com)
收稿日期: 2013-07-2