Carboxylation of the Ni–Me Bond in an Electron-Rich Unsymmetrical PCN Pincer Nickel Complex
Authors:
Open Access
- 13 April 2020
- journal article
- research article
- Published by American Chemical Society (ACS) in Organometallics
- Vol. 39 (9) , 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.Keywords
Funding Information
- Vetenskapsrådet
- Knut och Alice Wallenbergs Stiftelse
- Kungliga Fysiografiska Sällskapet i Lund
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