Aqueous and Visible-Light-Promoted C–H (Hetero)arylation of Uracil Derivatives with Diazoniums
作者:An-Di Liu、Zhao-Li Wang、Li Liu、Liang Cheng
DOI:10.1021/acs.joc.1c01799
日期:2021.12.3
Direct C5 (hetero)arylation of uracil and uridine substrates with (hetero)aryl diazoniumsalts under photoredox catalysis with blue light was reported. The coupling proceeds efficiently with diazoniumsalts and heterocycles in good functional group tolerance at room temperature in aqueous solution without transition-metal components. A plausible radical mechanism has been proposed.
New water soluble Pd-imidate complexes as highly efficient catalysts for the synthesis of C5-arylated pyrimidine nucleosides
作者:Anant Kapdi、Vijay Gayakhe、Yogesh S. Sanghvi、Joaquín García、Pedro Lozano、Ivan da Silva、José Pérez、J. Luis Serrano
DOI:10.1039/c4ra01326c
日期:——
Recyclable water-soluble Pd complexes were revealed as excellent catalysts for Suzuki–Miyaura cross-coupling of challenging substrates like the antiviral nucleoside analogue 5-iodo-20-deoxyuridine.