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- W1991624020 abstract "Abstract The reactions of AuBr 4 − with uracil and uridine in dimethyl sulfoxide (Me 2 SO) lead to the reduction of gold(III) to gold(I) and to the formation of the corresponding 5-bromopyrimidine. In Me 2 SO containing water the 5-bromo-6-hydroxy-5,6-dihydro-pyrimidine is also formed. The observed redox kinetics are consistent with a mechanism involving reductive elimination of bromine from the gold(III) complex followed by halogenation of the pyrimidine. The specific rates for the reduction of AuBr 4 − with both pyrimidines in Me 2 SO and in the partially aqueous solvent are greater than those for the corresponding reactions in water, uracil being more reactive than uridine. The tetrabromoaurate(III) ion is also reduced by Me 2 SO. The triphenylphosphine complex Au(PPh 3 )Br 3 reacts with uridine in Me 2 SO to give 5-bromouridine. Reduction of gold(III) to gold(I) also occurs through a reaction involving the formation of triphenylphosphine oxide." @default.
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- W1991624020 date "1990-02-01" @default.
- W1991624020 modified "2023-09-25" @default.
- W1991624020 title "Reduction reactions of gold(III) bromocomplexes in dimethyl sulfoxide" @default.
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- W1991624020 doi "https://doi.org/10.1016/s0020-1693(00)80946-9" @default.
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