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Carboxylation of the Ni-Me Bond in an Electron-Rich Unsymmetrical PCN Pincer Nickel Complex

Mousa, Abdelrazek H. LU ; Polukeev, Alexey V. LU ; Hansson, Josefine and Wendt, Ola F. LU (2020) In Organometallics 39(9). p.1553-1560
Abstract

The synthesis of a new unsymmetrical PCN ligand bearing tert-butyl groups on the phosphorus atom and isopropyl groups on the nitrogen donor atom is presented. It reacts with the commercially available Ni(DME)Br2 precursor to offer the corresponding t-BuPCNi-Pr pincer nickel bromide complex 1 together with a paramagnetic species, which was characterized as a tetrahedral nickel complex. Complex 1 reacts with MeMgCl to give the corresponding methyl complex 3. Carboxylation of complex 3 using 4 atm of CO2 gave the PCN nickel acetate complex 4 under mild reaction conditions comparable to those for the corresponding palladium complexes with PCP ligands.

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author
; ; and
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Organometallics
volume
39
issue
9
pages
8 pages
publisher
The American Chemical Society (ACS)
external identifiers
  • scopus:85083297512
ISSN
0276-7333
DOI
10.1021/acs.organomet.9b00817
language
English
LU publication?
yes
id
7adc45ce-1665-447b-9c22-86cebc4b857b
date added to LUP
2020-05-06 16:59:02
date last changed
2025-10-14 13:12:21
@article{7adc45ce-1665-447b-9c22-86cebc4b857b,
  abstract     = {{<p>The synthesis of a new unsymmetrical PCN ligand bearing tert-butyl groups on the phosphorus atom and isopropyl groups on the nitrogen donor atom is presented. It reacts with the commercially available Ni(DME)Br<sub>2</sub> precursor to offer the corresponding <sup>t-Bu</sup>PCN<sup>i-Pr</sup> pincer nickel bromide complex 1 together with a paramagnetic species, which was characterized as a tetrahedral nickel complex. Complex 1 reacts with MeMgCl to give the corresponding methyl complex 3. Carboxylation of complex 3 using 4 atm of CO<sub>2</sub> gave the PCN nickel acetate complex 4 under mild reaction conditions comparable to those for the corresponding palladium complexes with PCP ligands.</p>}},
  author       = {{Mousa, Abdelrazek H. and Polukeev, Alexey V. and Hansson, Josefine and Wendt, Ola F.}},
  issn         = {{0276-7333}},
  language     = {{eng}},
  month        = {{04}},
  number       = {{9}},
  pages        = {{1553--1560}},
  publisher    = {{The American Chemical Society (ACS)}},
  series       = {{Organometallics}},
  title        = {{Carboxylation of the Ni-Me Bond in an Electron-Rich Unsymmetrical PCN Pincer Nickel Complex}},
  url          = {{http://dx.doi.org/10.1021/acs.organomet.9b00817}},
  doi          = {{10.1021/acs.organomet.9b00817}},
  volume       = {{39}},
  year         = {{2020}},
}