Novel bis(oxazole) pincer ligands for catalysis: Application in Suzuki-Miyaura cross coupling reactions under aerobic conditions
摘要:
Introducing bis(oxazole) ligands to catalysis: novel bis(oxazole) ligands could be readily synthesized from isophthaloyl dichlorides and ethyl glycinate hydrochlorides or 6-aminoacetophenone hydrochloride. Their corresponding pincer palladium complexes proved to be extremely robust catalysts for Suzuki-Miyaura cross coupling reactions, allowing the synthesis of biaryls under aerobic conditions with turn over numbers of up to 790,000 and turn over frequencies of up to 49,000h(-1). (c) 2007 Elsevier B.V. All rights reserved.
Palladium(ii)- and platinum(ii)phenyl-2,6-bis(oxazole) pincer complexes: Syntheses, crystal structures, and photophysical properties
作者:Gang Xu、Qunli Luo、Stefan Eibauer、Andreas F. Rausch、Sabine Stempfhuber、Manfred Zabel、Hartmut Yersin、Oliver Reiser
DOI:10.1039/c1dt10369e
日期:——
ligands have been explored for the synthesis of novel palladium(II) and platinum(II) pincer complexes. The materials were characterized by spectroscopic methods and by X-ray crystallography. Investigations of the photophysical properties revealed that the lowest triplet states of the materials are largely centred at the bis(oxazole) ligands. The platinum(II) compounds are moderately emissive in fluid solution
Novel bis(oxazole) pincer ligands for catalysis: Application in Suzuki-Miyaura cross coupling reactions under aerobic conditions
作者:Qunli Luo、Stefan Eibauer、Oliver Reiser
DOI:10.1016/j.molcata.2006.12.004
日期:2007.5
Introducing bis(oxazole) ligands to catalysis: novel bis(oxazole) ligands could be readily synthesized from isophthaloyl dichlorides and ethyl glycinate hydrochlorides or 6-aminoacetophenone hydrochloride. Their corresponding pincer palladium complexes proved to be extremely robust catalysts for Suzuki-Miyaura cross coupling reactions, allowing the synthesis of biaryls under aerobic conditions with turn over numbers of up to 790,000 and turn over frequencies of up to 49,000h(-1). (c) 2007 Elsevier B.V. All rights reserved.