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Palladium Precatalysts (palladium + precatalyst)

Distribution by Scientific Domains
Chemistry100%

Selected Abstracts

Easily Prepared Air- and Moisture-Stable Pd,NHC (NHC: N-Heterocyclic Carbene) Complexes: A Reliable, User-Friendly, Highly Active Palladium Precatalyst for the Suzuki,Miyaura Reaction.

CHEMINFORM, Issue 43 2006
Christopher J. O'Brien
Abstract ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF. [source]

The synthesis and application of 2-acetyl-6-(1-naphthyl)-pyridine oxime as a new ligand for palladium precatalyst in Suzuki coupling reaction

JOURNAL OF HETEROCYCLIC CHEMISTRY, Issue 1 2009
Yongchang Zhou
The synthesis of 2-acetyl-6-(1-naphthyl)-pyridine oxime ligand from 2,6-dibromopyridine and 1-bromo-naphthalene is described, and the new palladium(II) complex used as a Pd(0) precatalyst in the Suzuki cross-coupling reaction was studied. The results showed that the novel naphthalene pyridine oxime complex could serve as an efficient precatalyst. J. Heterocyclic Chem., 46, 116 (2009). [source]

Suzuki reaction of aryl chlorides using saturated N -heterocarbene ligands

HETEROATOM CHEMISTRY, Issue 7 2005
Ismail Özdemir
From readily available starting materials, six 1,3-dialkyl-imidazolinium bromides (2a,f) have been prepared and characterized by conventional spectroscopic methods and elemental analyses. The incorporation of saturated N -heterocyclic carbenes into palladium precatalysts gives high catalyst activity in the Suzuki coupling of deactivated aryl chloride substrates in aqueous media. The complexes were generated in the presence of Pd(OAc)2 by in situ deprotonation of 2a,f. © 2005 Wiley Periodicals, Inc. Heteroatom Chem 16:557,561, 2005; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/hc.20140 [source]

Palladium(0) pre-catalysts with heteroditopic NHC,amine ligands by transmetallation from their silver(I) complexes

APPLIED ORGANOMETALLIC CHEMISTRY, Issue 6 2009
Stefan Warsink
Abstract The synthesis of an air-stable series of Pd0 complexes with dissymmetric bidentate N -heterocyclic carbene,amine ligands has been performed. The key step is an unprecedented carbene transfer from AgI to obtain electron-rich zero-valent palladium precatalysts. The coordination behavior of the ligands was determined with X-ray crystallography. Surprising results were obtained in the catalysis of transfer semi-hydrogenation, where the addition of base appeared not to be necessary to obtain the desired product stereoselectively. Copyright © 2009 John Wiley & Sons, Ltd. [source]