Cu2+-promoted nucleophilic addition of pyrazole to cyano group
| Autor: | Jing Wang, Ling-Ling Zheng, Sheng Hu, Jiongfei Wang, Ai-Ju Zhou, Chun-Xian Liao |
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| Rok vydání: | 2020 |
| Předmět: |
Nucleophilic addition
010405 organic chemistry Ligand chemistry.chemical_element Pyrazole 010402 general chemistry Ethanimine 01 natural sciences Medicinal chemistry Copper 0104 chemical sciences Inorganic Chemistry chemistry.chemical_compound Deprotonation chemistry Group (periodic table) Materials Chemistry Physical and Theoretical Chemistry Acetonitrile |
| Zdroj: | Inorganica Chimica Acta. 501:119303 |
| ISSN: | 0020-1693 |
| Popis: | Ligands resulting from copper(II)-promoted in-situ nucleophilic addition of pyrazole (Hpz) to 2-pyrimidinecarbonitrile (pcn), acetonitrile (MeCN) have been utilized in synthesis of clusters under conventional conditions. The addition of Hpz to pcn results in formation one uncommon polynitrogen ligand (1H-pyrazol-1-yl)(pyrimidin-2-yl)methanimine (Hppmi), deprotonation of it giving [ppmi]−, which has been incorporated into a cyclic tetranuclear cluster Cu4(ppmi)2(pz)4(MeOH)2(ClO4)2 (1), which shows strong antiferromagnetic coupling. Addition of Hpz to MeCN results in formation of 1-(1H-pyrazol-1-yl)ethanimine (pei), which features in a mononuclear complex Cu(pei)2(H2O)(NO3)2 (2). |
| Databáze: | OpenAIRE |
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