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Palladium-catalyzed Arylation of Ureas

✍ Scribed by G. A. Artamkina; A. G. Sergeev; I. P. Beletskaya

Book ID: 110348564
Publisher: SP MAIK Nauka/Interperiodica
Year: 2002
Tongue: English
Weight: 107 KB
Volume: 38
Category: Article
ISSN: 1070-4280
DOI: 10.1023/a:1016503307552

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Palladium-Catalyzed Arylation of Ureas.

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Palladium-catalyzed reaction of aryl hal

Palladium-catalyzed reaction of aryl halides with ureas

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A new method for the palladium-catalyzed arylation of ureas is described. The coupling reaction of urea and phenylurea with aryl halides containing electron-withdrawing groups in the p-position in dioxane in the presence of 0.5-1.0 mol% of Pd 2 dba 3 •CHCl 3 , Xantphos and Cs 2 CO 3 as a base gives

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Variation of xanthene-based bidentate ligands in the palladium-catalyzed arylation of ureas

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A series of xanthene-based bidentate ligands containing various substituents on diphenylphosphino groups were synthesized and tested in the palladium-catalyzed arylation reaction of urea with unactivated aryl bromides. It was found that both steric and electronic properties of the ligands have a pro

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Variation of Xanthene-Based Bidentate Ligands in the Palladium-Catalyzed Arylation of Ureas.

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ChemInform Abstract: Palladium-Catalyzed

ChemInform Abstract: Palladium-Catalyzed Reaction of Aryl Halides with Ureas.

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## Abstract ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable v

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Diarylbutadiynes 1 undergo a palladium-catalyzed coupling reaction with aryl halides 2 to give tetraarylbutatrienes 3, which may further react to benzofulvenes 6 depending on the reaction temperature and the type of aryl groups.