Palladium-catalyzed arylation of ureas

GA Artamkina, AG Sergeev, IP Beletskaya

Index: Artamkina; Sergeev; Beletskaya Russian Journal of Organic Chemistry, 2002 , vol. 38, # 4 p. 538 - 545

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Citation Number: 13

Abstract

Abstract Urea arylation with aryl halides in the presence of catalyst precursor Pd 2 dba 3- CHCl 3/Xantphos and Cs 2 CO 3 in dioxane at 100° C affords symmetrical N, N'-diarylureas in 64-92% yield. With the same catalytic system the reaction between N-phenylurea and aryl bromides containing electron-withdrawing substituents in the para-position provided N-aryl- N'-phenylureas in 64-91% yields.