18159-48-3Relevant academic research and scientific papers
Cationic nickel(II)-catalyzed hydrosilylation of alkenes: Role of p, n?type ligand scaffold on selectivity and reactivity
Hossain, Istiak,Schmidt, Joseph A.R.
, p. 3441 - 3451 (2020)
Seven structurally similar cationic nickel(II)?alkyl complexes were synthesized by using a series of P, N ligands, and their reactivity was explored in the hydrosilylation of alkenes. More electron-rich phosphines enhanced the overall reactivity of the transformation; in contrast, groups on the imine donor had little impact. Overall, these catalysts displayed reactivity and selectivity that was previously unknown or very rare in nickel-catalyzed hydrosilylation. In reactions with Ph2SiH2, 1,2-disubstituted vinylarenes showed complete benzylic selectivity for silane addition, whereas terminal selectivity was observed for 1,1-disubstituted alkenes. The related PhSiH3 led to exclusively Markovnikov selectivity for monosubstituted vinylarenes with no competing double addition observed. Mechanistic investigations supported the hypothesis that a Ni?H functions as the active species in this catalytic hydrosilylation, which in turn also showed catalytic competence for the silane redistribution reaction, especially with sterically unhindered silanes.
NICKEL COMPLEX COMPOUND, CATALYST COMPOSITION, AND PRODUCTION METHOD OF ORGANIC SILICON COMPOUND
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Paragraph 0042; 0043, (2018/01/09)
PROBLEM TO BE SOLVED: To provide a novel compound, especially a compound utilizable as a catalyst for a hydrosilylation reaction of alkenes or alkynes, or the like. SOLUTION: A novel nickel complex having a η3-allyl ligand having a substituent
