WitrynaSee more Nickel products. Nickel (atomic symbol: Ni, atomic number: 28) is a Block D, Group 4, Period 4 element with an atomic weight of 58.6934. The number of electrons in each of nickel's shells is [2, 8, 16, 2] and its electron configuration is [Ar]3d 8 4s 2. Nickel was first discovered by Alex Constedt in 1751. WitrynaA nickel boride catalyst prepared in situ from NiCl 2 and sodium borohydride allowed facile reductions of a wide range of nitroarenes, aliphatic nitro compounds, and …
Nickel boride catalyst - WikiMili, The Best Wikipedia Reader
WitrynaHere we report that the combination of nickel boride (Ni 2 B) and NaBH 4 in CH 3 OH smoothly reduces a variety of primary, secondary and tertiary nitroaliphatic compounds to amines within ca. 15 min at RT. The process is catalytic in boride, which is prepared in situ by the NaBH 4 reduction of NiCl 2 in CH 3 OH 12. WitrynaYtterbium triflate catalyses the deprotection of tert-butyl esters selectively in the presence of other esters under mild conditions in almost quantitative yields. The reactions are carried out in nitromethane (45degrees - 50degreesC) using 5 … jelo service
Nickel boride catalyst - Wikipedia
WitrynaJean Marie Vianney is a research engineer at the University of Siegen in Germany with extensive research experience in material science, electrochemistry, catalysis, and perovskite solar cells. He completed his undergraduate studies with First Class Honors. He was a postdoc fellow at CNRS in France after his Ph.D. graduation from the … Witryna10 kwi 2024 · Chemoselectivity in the hydrogenation of carbonyl over alkene bonds is valuable for producing industrial chemicals. In this study, we investigate the role of water in the selective hydrogenation of cinnamaldehyde on cobalt and cobalt boride catalysts by combining rate measurements, in situ characterization, and computational … Witryna10 kwi 2024 · A nickel-catalyzed tetradehydro-Diels–Alder reaction of (E)-3-ene-1,8-diynes for the preparation of isoindolines, dihydroisobenzofurans, and tetrahydroisoquinolines has been developed. A series of air-stable nickel catalysts were used in this study, including the novel nickel(0)–phosphite catalysts, Ni[P(O-3,5-Me … jelos bios