10.1016/j.poly.2010.01.032
The study focuses on the synthesis, electrochemical, in situ spectroelectrochemical, and in situ electrocolorimetric characterization of new metal-free and metallophthalocyanines substituted with 4-{2-[2-(1-naphthyloxy)ethoxy]ethoxy} groups. The chemicals used in the study include metal-free and metallophthalocyanines [Ni(II), Zn(II), Co(II), Cu(II)] prepared by cyclotetramerization of a novel 4-{2-[2-(1-naphthyloxy)ethoxy]ethoxy}phthalonitrile and the corresponding metal salts (NiCl2, Zn(CH3COO)2, CoCl2, and CuCl2). These compounds were synthesized to investigate their potential applications in nonlinear optics, optical data storage, photodynamic cancer therapy, sensors, catalysis, and solar energy conversion due to their unique properties. The study aimed to enhance the solubility of these compounds by introducing functional groups on the periphery, which is crucial for expanding their applications, and to explore their electrochromic properties by analyzing their redox processes and color changes during these processes.
10.1021/jacs.1c00618
The study explores a novel method for the photocatalytic dehydroxymethylative arylation of free alcohols using cerium and nickel catalysts. The researchers utilized cerium trichloride and benzoate ligands to form a cerium complex that, in conjunction with nickel chloride and a bipyridine-type ligand, enabled the selective cleavage of the α-C(sp3)?C(sp3) bond in alcohols under mild reaction conditions. The process involves the conversion of alcohols into nucleophilic alkyl radicals via cerium?LMCT catalysis, which are then intercepted by a nickel cross-coupling cycle, resulting in the formation of C(sp3)?C(sp2) bonds with the extrusion of formaldehyde. The study identified a tribenzoate cerium(III) complex as a viable intermediate and demonstrated the reaction's broad applicability with various primary alcohols and aromatic halides. The findings highlight a new paradigm for sustainable synthesis using abundant and economical metals, showcasing the potential of cerium in photocatalysis and the synergy between cerium and nickel catalysis.
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