TRIARYLBISMUTHANE-IODOBENZENE DIACETATE - ONE-POT SYSTEM FOR COPPER-CATALYZED N-ARYLATION UNDER NEUTRAL CONDITIONS

Triarylbismuthanes react with iodobenzene diacetate in dichloromethane under mild, neutral conditions to afford triarylbismuth diacetates, w hich can be isolated in good yields. The reagents can also be directly used in a one-pot copper-catalysed N-arylation of anilines to give ne ar quantitative yields of the corresponding diarylamines, except in th e case of the 2-methoxyphenylbismuth derivative. N-arylation with tris (2-methoxyphenyl)bismuth diacetate was quantitative only when the reac tion was performed with the pure isolated reagent. (C) 1998 Elsevier S cience Ltd. All rights reserved.