4634-14-4Relevant articles and documents
Nickel-Catalyzed Reductive 2-Pyridination of Aryl Iodides with Difluoromethyl 2-Pyridyl Sulfone
Miao, Wenjun,Ni, Chuanfa,Xiao, Pan,Jia, Rulong,Zhang, Wei,Hu, Jinbo
, p. 711 - 715 (2021/01/26)
A novel nickel-catalyzed reductive cross-coupling between aryl iodides and difluoromethyl 2-pyridyl sulfone (2-PySO2CF2H) enables C(sp2)-C(sp2) bond formation through selective C(sp2)-S bond cleavage, which demonstrates the new reactivity of 2-PySO2CF2H reagent. This method employs readily available nickel catalyst and sulfones as cross-electrophile coupling partners, providing facile access to biaryls under mild reaction conditions without pregeneration of arylmetal reagents.
α-Halo carbonyls enable: Meta selective primary, secondary and tertiary C-H alkylations by ruthenium catalysis
Paterson, Andrew J.,Heron, Callum J.,McMullin, Claire L.,Mahon, Mary F.,Press, Neil J.,Frost, Christopher G.
supporting information, p. 5993 - 6000 (2017/07/25)
A catalytic meta selective C-H alkylation of arenes is described using a wide range of α-halo carbonyls as coupling partners. Previously unreported primary alkylations with high meta selectivity have been enabled by this methodology whereas using straight chain alkyl halides affords ortho substituted products. Mechanistic analysis reveals an activation pathway whereby cyclometalation with a ruthenium(ii) complex activates the substrate molecule and is responsible for the meta selectivity observed. A distinct second activation of the coupling partner allows site selective reaction between both components.
Design and synthesis of non-symmetric phenylpyridine type ligands. Experimental and theoretical studies of their corresponding iridium complexes
Iturbe,Loeb,Barrera,Brito,Ca?ete
, p. 159 - 170 (2016/09/13)
In this work three non-symmetric phenylpyridine type ligands, L1, L2 and L3, were designed, and their corresponding Iridium complexes, C1, C2 and C3, synthetized, in order to understand the effect of ligand asymmetry on the properties of the complexes, and to explore their potentiality in devices. The complexes were structurally characterized by NMR experiments and by X-ray Diffraction, and physicochemically by technics as UV/Vis and cyclic voltammetry. Theoretical DFT calculations of the energy and electronic density of the frontier orbitals of the complexes under study were also performed. The energy of the HOMO and LUMO correlated well with the experimental electrochemical data, and supported the understanding of the processes observed.
