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β-硝基-5,10,15,20-四(2-甲氧基苯基)卟啉合成及其阻旋异构 被引量:2

Regioselective synthesis of 2-nitro-5,10,15,20-tetra(2-methoxylphenyl) porphyrin and its Atropisomerism
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摘要 在采用区域选择性硝化方法合成β-硝基-5,10,15,20-四芳基卟啉铜、镍配合物的过程中,发现并通过核磁等方法分析了5,10,15,20-四(2-甲氧基苯基)卟啉及其相应β-硝基取代物的阻旋异构现象。图谱分析表明,与其结构类似的5,10,15,20-四(2-羟基苯基)卟啉及5,10,15,20-四(4-甲氧基苯基)卟啉系列化合物没有该阻旋异构现象,说明邻位甲氧基阻碍了苯环与芳环之间C-C单键的旋转。进一步通过Chemdraw 3D Ultra软件能量最小化计算,讨论了阻转异构体可能的方式。 In the process of synthesizing β-nitro-5,10,15,20-tetra aryl porphyrinato copper (II) and nickel (II) by regioselective nitration, atropisomerism was found in meso-tetra(2-methoxylphenyl)-porphyrin. The nuclear magnetic spectrometry analysis showed that, unlike the 5, 10, 15,20-tetra (hydroxyphenyl) -porphyrin, atropisomer happens in the 5,10, 15,20-tetra (2-methoxyphenyl) porphyrin,because o-methoxyl hinder rotation of σ-bond between the meso-phenyl and porphyrin, the possibility structure of atropisomer was discussed through minimize energy calculation by Chemdraw 3D Ultra software.
出处 《化学研究与应用》 CAS CSCD 北大核心 2009年第8期1145-1149,共5页 Chemical Research and Application
基金 国家自然科学基金(20471045)项目资助 武汉市青年科技晨光计划(20065004116-36)项目资助
关键词 区域选择性合成 β-硝基-四(2-甲氧基苯基)卟啉 阻旋异构 regioselective synthesis β-nitro-tetra (2-methoxylphenyl) -porphyrin atropisomerism
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