Charge-Tagged Acetate Ligands As Mass Spectrometry Probes for Metal Complexes Investigations: Applications in Suzuki and Heck Phosphine-Free Reactions

Autor: Adriano L. Monteiro, Felipe F. D. Oliveira, Alexandre A. M. Lapis, Priscila M. Lalli, Peter Bakuzis, Brenno A. D. Neto, Eduardo Morgado Schmidt, Marcelo Rodrigues dos Santos, Marcos N. Eberlin
Rok vydání: 2011
Předmět:
Zdroj: The Journal of Organic Chemistry. 76:10140-10147
ISSN: 1520-6904
0022-3263
Popis: An acetate anion bearing an imidazolium cation as its charge tag was reacted with M(OAc)(2) complexes (where M = Ni, Cu, and Pd; in situ reaction) to form members of a new class of charge-tagged metal complexes. The formation of these unprecedented precatalysts with potential for cross-coupling reactions was confirmed by electrospray ionization (and tandem) mass spectrometry. The catalytic performance of the palladium complex was tested in Heck and Suzuki cross-coupling reactions, often with superior activity and yields as compared with Pd(OAc)(2).
Databáze: OpenAIRE