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Hypervalent Iodine Derivatives
Chen and co-workers report a selective copper-catalyzed mono- and diarylation protocol using diaryliodonium salts. Using different bases compounds 2 and 3 are selectively obtained (K2CO3: 5% of 2 and 59% of 3; NaOAc: 59% of 2 and traces of 3). The authors use this methodology to synthesize diaryl (4, 52-85% yield) and monoaryl (5, 40-60 % yield) derivatives of uracil and thymine
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