典型文献
Cyclic(Amino)(Aryl)Nitrenium Cations with Lewis Acidity Controlled by Remote Substituents
文献摘要：
N-Heterocyclic nitrogen Lewis acids are important in synthetic chemistry.Stable cyclic(amino)(aryl)nitrenium cations,cyc-1+-cyc-3+,were synthesized by chemical oxidation of aryl azo compounds with different substituents,'Pr,H and I,at the para positions of the phenyl group.The excited triplet states of cyc-1+-cyc-3+abstract H-atoms step by step to generate radical intermediates cyc-1H·+-cyc-3H·+traced by EPR spectroscopy and products cyc-1H2+-cyc-3H2+characterized by single crystal X-ray diffraction.The Lewis acidity of species cyc-1+-cyc-3+are remote substituent-dependent.Cyc-2+-cyc-3+have much higher acidity than those pre-viously reported congeners based on energies of LUMOs.The electrophilicity enables them to form Lewis adducts with neutral Lewis base Me3P,and to gain one-electron to produce neutral radicals cyc-1·-cyc-3·.
文献关键词：
中图分类号：
作者姓名：
Wenqing Wang;Xin Zheng;Leran Zhang;Shunjie Li;Yue Zhao;Xinping Wang
作者机构：
College of Chemistry and Material Science,Key Laboratory of Functional Molecular Solids,Ministry of Education,Anhui Laboratory of Molecule-Based Materials,Anhui Normal University,Wuhu,Anhui 241002,China;State Key Laboratory of Coordination Chemistry,School of Chemistry and Chemical Engineering,Nanjing University,Nanjing,Jiangsu 210023,China;College of Science,Henan Agricultural University,Zhengzhou,Henan 450002,China
文献出处：
引用格式：
[1]Wenqing Wang;Xin Zheng;Leran Zhang;Shunjie Li;Yue Zhao;Xinping Wang-.Cyclic(Amino)(Aryl)Nitrenium Cations with Lewis Acidity Controlled by Remote Substituents)[J].中国化学（英文版）,2022(03):311-316
A类：
Nitrenium,Acidity,Substituents,nitrenium,3+abstract,+traced,1H2+,3H2+characterized,3+are,3+have,LUMOs,electrophilicity,Me3P
B类：
Cyclic,Amino,Aryl,Cations,Lewis,Controlled,by,Remote,Heterocyclic,nitrogen,acids,important,synthetic,chemistry,Stable,amino,aryl,cations,1+,were,synthesized,chemical,oxidation,azo,compounds,different,substituents,Pr,para,positions,phenyl,group,excited,triplet,states,atoms,step,generate,intermediates,EPR,spectroscopy,products,single,crystal,ray,diffraction,acidity,species,remote,dependent,much,higher,than,those,pre,viously,reported,congeners,energies,enables,them,form,adducts,neutral,gain,one,electron,produce,radicals
AB值：
0.472656
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