The author of 《Hydrogen Bond-Accelerated meta-Selective C-H Borylation of Aromatic Compounds and Expression of Functional Group and Substrate Specificities》 were Lu, Xu; Yoshigoe, Yusuke; Ida, Haruka; Nishi, Mitsumi; Kanai, Motomu; Kuninobu, Yoichiro. And the article was published in ACS Catalysis in 2019. Computed Properties of C5H3Br2N The author mentioned the following in the article:
Meta-selective C-H borylation of aromatic compounds was accelerated when using urea moiety-containing bipyridine-type ligands unlike in cases involving a bipyridine-type ligand without the urea moiety. The acceleration was due to the recognition and capture of the aromatic substrates by the urea moiety of the ligand by H bonding. The acceleration was further enhanced by modifying the electronic and steric properties of the ligand. The functional group and substrate specificities were also observed using the urea moiety-containing ligands. In the experiment, the researchers used many compounds, for example, 2,5-Dibromopyridine(cas: 624-28-2Computed Properties of C5H3Br2N)
2,5-Dibromopyridine(cas: 624-28-2) belongs to pyridine. Pyridine is a relatively complex molecule and exhibits a number of different bands in IR spectra. Among others, the bands characterizing the ν8a and ν19b modes have been found to be sensitive to the coordination or protonation of the molecule. Note that the band that is diagnostic for the PyH+ ion at about 1545 cm− 1 (ν19b mode) does not overlap with any of the other bands.Computed Properties of C5H3Br2N