Computed Properties of C6H3BrClNO2. The reaction of aromatic heterocyclic molecules with protons is called protonation. Aromatic heterocycles are more basic than benzene due to the participation of heteroatoms. Compound: 3-Bromo-4-chloronitrobenzene, is researched, Molecular C6H3BrClNO2, CAS is 16588-26-4, about Ligand-free Suzuki-Miyaura cross-coupling with low Pd content: rapid development by a fluorescence-based high-throughput screening method. Author is Lim, Taeho; Ryoo, Jeong Yup; Jang, Mingyeong; Han, Min Su.
In this study, a highly efficient Suzuki-Miyaura (SM) cross-coupling was developed using metal oxide catalysts: 0.02 mol% Pd, aqueous solvent, no ligand, and room temperature Metal oxides containing low Pd content (ppm scale) were prepared by a simple co-precipitation method and used as a catalyst for the SM reaction. A fluorescence-based high-throughput screening (HTS) method was developed for the rapid evaluation of catalytic activity and reaction conditions. Among the various metal oxides, Pd/Fe2O3 showed the highest activity for the SM reaction. After further optimization by HTS, various biaryl compounds RR1 (R = 2-formylphenyl, 4-fluorophenyl, 2-chloro-5-nitrophenyl, etc.; R1 = Ph, 6-methoxynaphthalen-2-yl, pyren-1-yl, 4-fluoro-2-methylphenyl) were obtained under optimal conditions: Pd/Fe2O3 (0.02 mol% Pd) in aqueous ethanol at mild temperature without any ligands.
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