Tetrahedron letters

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

AG Sergeev, GA Artamkina, IP Beletskaya

文献索引：Sergeev, Alexey G.; Artamkina, Galina A.; Beletskaya, Irina P. Tetrahedron Letters, 2003 , vol. 44, # 25 p. 4719 - 4723

全文：HTML全文

被引用次数: 71

摘要

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 pronounced effect on the yields and ratios of the products. Arylation of urea and phenylurea with unactivated aryl bromides in the presence of ...