期刊
JOURNAL OF ORGANOMETALLIC CHEMISTRY
卷 951, 期 -, 页码 -出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.jorganchem.2021.122013
关键词
Palladium; Imidazolidin-2-ylidene; PEPPSI; C-H functionalization; N-Heterocycles
资金
- Technological and Scientific Research Council of Turkey TUBITAK [117R010]
In this study, a series of air- and moisture-stable imidazolidin-2-ylidene-based new palladium complexes were synthesized and characterized. The catalytic activities of these complexes in direct arylation reactions were tested, yielding desired products in moderate to good yields.
In this study, a series of air- and moisture-stable imidazolidin-2-ylidene-based new palladium complexes with the general formula [PdX2(NHC)(Py)] were synthesized (NHC = N-heterocyclic carbene, Py = pyridine, X = Cl or I). The structures of the palladium complexes were characterized by different techniques such as H-1 NMR, C-13 NMR, FT-IR spectroscopy and elemental analysis. The more detailed structural characterization of one of the palladium complex was determined by single-crystal X-ray diffraction study. The catalytic activities of all palladium complexes were tested in the direct arylation of five-membered aromatic N-heterocycles such as 3,5-dimethylisoxazole and 1-methyl-1H-pyrrole-2-carboxaldehyde with (hetero)aryl bromides in presence of 1 mol% catalyst loading at 120 degrees C. Desired products were obtained in moderate to good yields. (C) 2021 Elsevier B.V. All rights reserved.
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