Quality Control of Tris(2,2′-bipyridine)ruthenium bis(hexafluorophosphate). Aromatic heterocyclic compounds can also be classified according to the number of heteroatoms contained in the heterocycle: single heteroatom, two heteroatoms, three heteroatoms and four heteroatoms. Compound: Tris(2,2′-bipyridine)ruthenium bis(hexafluorophosphate), is researched, Molecular C30H24F12N6P2Ru, CAS is 60804-74-2, about Synthetic Diversity from a Versatile and Radical Nitrating Reagent. Author is Zhang, Kun; Jelier, Benson; Passera, Alessandro; Jeschke, Gunnar; Katayev, Dmitry.
A new methodol. was described for the activation of N-nitrosuccimide for the direct synthesis of β-nitroalkenes, β-nitrohydrins, β-nitroethers, isoxazolines I [R = Me, cyclopropyl; R1 = n-heptyl, Bn, CH2OPh; R2 = H, R1R2 = (CH2)4, (CH2)9, (CH2)10C(O)(CH2)3; R3 = H, Me] and isoxazoles II [R4 = CO2Et, CH2CH2Br, cyclohexyl, etc.]. Detailed mechanistic studies strongly suggested that a mesolytic N-N bond fragmentation liberates a nitryl radical. Using in situ photo-sensitized, ESR spectroscopy, direct evidence of a nitryl radical in solution by nitrone spin-trapping was observed To further exhibit versatility of N-nitrosuccinimide under photoredox conditions, the late-stage diversification of an extensive number of C-H partners to prepare isoxazolines I and isoxazoles II was presented. This approach allowed for the formation of an in situ nitrile oxide from a ketone partner, the presence of which was detected by the formation of the corresponding furoxan when conducted in the absence of a dipolarophile. This 1,3-dipolar cycloaddition with nitrile oxides and alkenes or alkynes proceeded in a single-operational step using a mild, regioselective and general protocol with broad chemoselectivity.
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Reference:
Highly efficient and robust molecular ruthenium catalysts for water oxidation,
Catalysts | Special Issue : Ruthenium Catalysts – MDPI