10448-07-4Relevant articles and documents
The triple-bond metathesis of aryldiazonium salts: A prospect for dinitrogen cleavage
Lackner, Aaron D.,Fürstner, Alois
, p. 12814 - 12818 (2015)
The {N2} unit of aryldiazonium salts undergoes unusually facile triple-bond metathesis on treatment with molybdenum or tungsten alkylidyne ate complexes endowed with triphenylsilanolate ligands. The reaction transforms the alkylidyne unit into a nitrile and the aryldiazonium entity into an imido ligand on the metal center, as unambiguously confirmed by X-ray structure analysis of two representative examples. A tungsten nitride ate complex is shown to react analogously. Since the bonding situation of an aryldiazonium salt is similar to that of metal complexes with end-on-bound dinitrogen, in which {N2}→M σ donation is dominant and electron back donation minimal, the metathesis described herein is thought to be a conceptually novel strategy toward dinitrogen cleavage devoid of any redox steps and, therefore, orthogonal to the established methods. Who knows? Although the extrusion of molecular nitrogen from aryldiazonium salts is extremely facile, the metathetic cleavage of the N-N triple bond on treatment with alkylidyne ate complexes of molybdenum or tungsten is shown to be even faster. The analogy between [Ar-N2]+ and known [M-N2] complexes makes this process a potential model for dinitrogen cleavage devoid of any redox steps.
Photoinduced Arylation of Acridinium Salts: Tunable Photoredox Catalysts for C-O Bond Cleavage
Boixel, Julien,Cao, Yi-Xuan,Choua, Sylvie,Gourlaouen, Christophe,Jacquot De Rouville, Henri-Pierre,Le Breton, Nolwenn,Li, Yiqun,Soulé, Jean-Fran?ois,Zhu, Gan
supporting information, p. 5902 - 5909 (2022/04/12)
A photoinduced arylation of N-substituted acridinium salts has been developed and has exhibited a high functional group tolerance (e.g., halogen, nitrile, ketone, ester, and nitro). A broad range of well-decorated C9-arylated acridinium-based catalysts with fine-tuned photophysical and photochemical properties, namely, excited-state lifetimes and redox potentials have been synthetized in a one-step procedure. These functionalized acridinium salts were later evaluated in the photoredox-catalyzed fragmentation of 1,2-diol derivatives (lignin models). Among them, 2-bromophenyl substituted N-methyl acridinium has outperformed all photoredox catalysts, including commercial Fukuzumi's catalyst, for the selective CβO-Ar bond cleavage of diol monoarylethers to afford 1,2-diols in good yields.
PHOSPHINE TRANSITION METAL COMPLEX, METHOD FOR PRODUCING THE SAME AND ANTICANCER AGENT
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Paragraph 0055-0057, (2020/05/06)
PROBLEM TO BE SOLVED: To provide a phosphine transition metal complex having excellent solubility to aqueous solvent, and higher anticancer activity than that of conventional cisplatin, and an anticancer agent including the same and a method for producing a phosphine transition metal complex using the same. SOLUTION: The present invention provides a phosphine transition metal complex represented by formula (1) (where R1-R4 and R6-R9 each denote an alkyl group, a cycloalkyl group, or an adamantyl group, R5 and R10 each denote a monovalent substituent, n and y each denote an integer of 0-4, M is a transition metal atom selected from gold, copper, silver). SELECTED DRAWING: None COPYRIGHT: (C)2020,JPO&INPIT
Copper-mediated tandem ring-opening/cyclization reactions of cyclopropanols with aryldiazonium salts: Synthesis of: N -arylpyrazoles
Liu, Jidan,Xu, Erjie,Jiang, Jinyuan,Huang, Zeng,Zheng, Liyao,Liu, Zhao-Qing
supporting information, p. 2202 - 2205 (2020/02/26)
A general method for the synthesis of structurally diverse N-arylpyrazoles from readily available cyclopropanols and aryldiazonium salts is disclosed. The reaction was conducted at room temperature within minutes with a broad substrate scope and excellent regioselectivity.
