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Enhancing the Stability of Aromatic PCN Pincer Nickel Complexes by Incorporation of Pyridine as the Nitrogen Side Arm
Author(s) -
Mousa Abdelrazek H.,
Chakrabarti Kaushik,
Isapour Ghodsieh,
Bendix Jesper,
Wendt Ola F.
Publication year - 2020
Publication title -
european journal of inorganic chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.667
H-Index - 136
eISSN - 1099-0682
pISSN - 1434-1948
DOI - 10.1002/ejic.202000727
Subject(s) - chemistry , pyridine , pincer movement , aryl , nickel , reagent , pincer ligand , alkyl , halide , medicinal chemistry , combinatorial chemistry , ligand (biochemistry) , polymer chemistry , suzuki reaction , organic chemistry , catalysis , biochemistry , receptor
New PCN Py pincer nickel complexes have been synthesized through a short synthetic route. Incorporating pyridine as the nitrogen side arm facilitated the C–H activation in the PCN ligand and allowed the cyclometallation with nickel to take place at room temperature. Pyridine also enhanced the stability of β ‐ hydrogen‐containing alkyl complexes. Also, the symmetric NCN nickel complex with pyridine side arms was successfully obtained giving a rare example of such type of complexes to be prepared through direct C–H activation. Furthermore, preliminary results showed that the (PCN Py )Ni–Br is active in Kumada coupling reactions particularly the coupling of aryl halides with aryl Grignard reagents.