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- W2065475828 abstract "Treatment of [Ni(COD)2] (COD = 1,5-cyclooctadiene) with 5-chloro-2,4,6-trifluoropyrimidine (1) in the presence of PiPr3 or PPh3 effects the formation of the fluoro complexes trans-[NiF(4-C4N2ClF2)(PiPr3)2] (3) and trans-[NiF(4-C4N2ClF2)(PPh3)2] (4). The chloro complex trans-[NiCl(4-C4N2ClF2)(PPh3)2] (5) can be prepared by reaction of 4 with Me3SiCl. In contrast, a reaction of 1 with [Pd(PPh3)4] leads to the insertion of a {Pd(PPh3)2} unit into the C−Cl bond yielding trans-[PdCl(5-C4N2F3)(PPh3)2] (6). Treatment of 4 with an excess of TolB(OH)2 at 273 K results in the slow formation of trans-[NiF(4-C4N2TolClF)(PPh3)2] (7) and subsequently 5-chloro-2-fluoro-4,6-ditolylpyrimidine (8). Quenching of a solution of 7 with Me3SiCl leads to the chloro derivative trans-[NiCl(4-C4N2TolClF)(PPh3)2] (9). Treatment of 4 with PhB(OH)2 followed by addition of Me3SiCl gives the complex trans-[NiCl(4-C4N2PhClF)(PPh3)2] (10). In catalytic experiments, 1 is converted with the boronic acids TolB(OH)2, PhB(OH)2, and p-F3CC6H4B(..." @default.
- W2065475828 created "2016-06-24" @default.
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- W2065475828 date "2005-11-29" @default.
- W2065475828 modified "2023-09-27" @default.
- W2065475828 title "Catalytic C—C Coupling Reactions at Nickel by C—F Activation of a Pyrimidine in the Presence of a C—Cl Bond: The Crucial Role of Highly Reactive Fluoro Complexes." @default.
- W2065475828 cites W2953179816 @default.
- W2065475828 doi "https://doi.org/10.1002/chin.200548168" @default.
- W2065475828 hasPublicationYear "2005" @default.
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