POCN Ni(II) pincer complexes: synthesis, characterization and evaluation of catalytic hydrosilylation and hydroboration activities

Kristina Gudun, Medet Segizbayev, Assyl Adamov, Philipp Plessow, Konstantin Lyssenko, Mannix Balanay Padayhag, Andrey Khalimon

Research output: Contribution to journalArticlepeer-review

14 Citations (Scopus)

Abstract

A series of iminophosphinite POCN pincer Ni(ii) complexes, (POCN)NiMe and (POCN)NiLn(BX4) (L = CH3CN, n = 0, 1; X = F, Ph, C6F5), have been developed and subjected to catalytic hydrosilylation of alkenes, aldehydes and ketones and hydroboration of carbonyl compounds. The stoichiometric reactivity of (POCN)NiMe and (POCN)Ni(BF4) with PhSiH3 and HBPin suggests that catalytic reactions proceed via the hydride intermediate (POCN)NiH. With regard to reactions with HBPin, efficient and mild hydroboration of a variety of carbonyl compounds, including highly chemoselective hydroboration of benzaldehyde in the presence of other common potent reductive functional groups, such as alkenes, alkynes, esters, amides, nitriles, nitro compounds and even ketones, and the first example of base metal catalyzed hydroboration of amides, including mild direct hydroborative reduction of primary and secondary amides to borylated amines were demonstrated for (POCN)NiMe.

Original languageEnglish
Article number10.1039/C8DT04854A
Pages (from-to)1732-1746
Number of pages14
JournalDalton Transactions
Volume48
Issue number5
DOIs
Publication statusPublished - Jan 1 2019

Keywords

  • hydrosilylation
  • hydroboration
  • Nickel
  • coordination compounds
  • homogeneous catalysis

ASJC Scopus subject areas

  • Inorganic Chemistry

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