《Ligand Steric Effects of α-Diimine Nickel(II) and Palladium(II) Complexes in the Suzuki-Miyaura Cross-Coupling Reaction》 was published in ACS Omega in 2020. These research results belong to Talukder, Muktadir Md; Cue, John Michael O.; Miller, Justin T.; Gamage, Prabhath L.; Aslam, Amina; McCandless, Gregory T.; Biewer, Michael C.; Stefan, Mihaela C.. Product Details of 523-27-3 The article mentions the following:
A family of mono- and dinuclear Ni(II) and Pd(II) complexes I, II, III and IV with a diverse and versatile α-diimine ligand environment for Suzuki-Miyaura cross-coupling (SMC) reactions was examined To evaluate the ligand steric effects, including the bite angle in the reaction outcomes, the structural variation of the complexes I, II, III and IV was achieved by incorporating iminopyridine- and acenaphthene-based ligands. Moreover, the impact of substrate bulkiness was investigated by reacting various aryl bromides RBr (R = Ph, 1H-indol-5-yl, 4-bromo-2,3,5,6-tetrafluorophenyl, etc.) with phenylboronic acid, 2-naphthylboronic acid, and 9-phenanthracenylboronic acid. Yields were the best with the dinuclear complex, being nearly quant. (93-99%), followed by the mononuclear complexes I and IV, giving yields of 78-98%. Consequently, α-diimine-based ligands V and VI have the potential to deliver Ni-based systems I and II as sustainable catalysts in SMC. In the experiment, the researchers used 9,10-Dibromoanthracene(cas: 523-27-3Product Details of 523-27-3)
9,10-Dibromoanthracene(cas: 523-27-3) can be sublimated and oxidized to generate anthraquinone. Soluble in hot benzene and hot toluene, slightly soluble in alcohol, ether and cold benzene, insoluble in water.Product Details of 523-27-3
Referemce:
Bromide – Wikipedia,
bromide – Wiktionary