Name: Copper(I) tetra(acetonitrile) tetrafluoroborate. Aromatic compounds can be divided into two categories: single heterocycles and fused heterocycles. Compound: Copper(I) tetra(acetonitrile) tetrafluoroborate, is researched, Molecular C8H12BCuF4N4, CAS is 15418-29-8, about Metal-to-Ligand Ratio-Dependent Chemodivergent Asymmetric Synthesis. Author is Zheng, Min; Gao, Ke; Qin, Haitao; Li, Guigen; Lu, Hongjian.
Chemodivergent asym. synthesis was achieved by tuning the metal-to-ligand ratio in an organometallic catalytic system. Using N-(aroyloxy)phthalimides I (Ar = 2,6-difluorophenyl, 2,3,4,5,6-pentafluorophenyl, Ph, etc.; R = 4-bromophenyl, thiophen-2-yl, Bu, etc.) as the precursor of either an oxygen-centered aroyloxy radical or a nitrogen-centered phthalimidyl radical, enantioselective oxocyanation or aminocyanation of alkenes RCH=CH2 was achieved sep. through a dual photoredox and copper catalysis. The metal-to-ligand ratio can exert chemoselective control while retaining the high enantiopurity of divergent products II, (2R)-RCH(CN)CH2OC(O)Ar. Both reactions proceed efficiently with catalyst loading as low as 0.2 mol% and can be performed on a gram scale without loss of chemoselectivity or enantioselectivity. Chemodivergent asym. 1,5-aminocyanation or 1,5-oxocyanation of vinylcyclopropane can also be realized by this protocol. Mechanistic investigations involving ESR (EPR) experiments were performed to shed light on the stereochem. and chemodivergent results.
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Reference:
Highly efficient and robust molecular ruthenium catalysts for water oxidation,
Catalysts | Special Issue : Ruthenium Catalysts – MDPI