Calix[4]arene-Supported N-Heterocyclic Carbene Ligands as Catalysts for Suzuki Cross-Coupling Reactions of Chlorotoluene

Frank M, Maas G, Schatz J (2004)


Publication Type: Journal article, Original article

Publication year: 2004

Journal

Original Authors: Frank M., Maas G., Schatz J.

Publisher: Wiley-VCH Verlag

Pages Range: 607-613

Journal Issue: 3

URI: https://www.scopus.com/record/display.uri?eid=2-s2.0-1242330910&origin=inward

Abstract

Stable N-heterocyclic carbenes are generated starting from 5,17-(bis-imidazolium)-substituted calix[4]arenes. Addition of Pd(OAc) to these carbenes leads to macrocyclic cis-palladium chelate complexes in which the distal bridging of the upper rim leads to a strong distortion of the calix[4]arene skeleton which was proven by X-ray crystal structure determination. Using an in-situ catalytic system consisting of a calixarene-imidazolium salt, Cs CO as a base and a source of palladium, a species is formed which can be used to catalyse the Suzuki cross-coupling of 4-chloro toluene. © Wiley-VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2004.

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How to cite

APA:

Frank, M., Maas, G., & Schatz, J. (2004). Calix[4]arene-Supported N-Heterocyclic Carbene Ligands as Catalysts for Suzuki Cross-Coupling Reactions of Chlorotoluene. European Journal of Organic Chemistry, 3, 607-613.

MLA:

Frank, Markus, Gerhard Maas, and Jürgen Schatz. "Calix[4]arene-Supported N-Heterocyclic Carbene Ligands as Catalysts for Suzuki Cross-Coupling Reactions of Chlorotoluene." European Journal of Organic Chemistry 3 (2004): 607-613.

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