Palladium??Catalyzed Synthesis of 4??Arylcoumarins Using Triarylbismuth Compounds as Atom??Efficient Multicoupling Organometallic Nucleophiles

…, V Venkatesh, DN Jadhav

Index: Rao, Maddali L. N.; Venkatesh, Varadhachari; Jadhav, Deepak N. European Journal of Organic Chemistry, 2010 , # 20 p. 3945 - 3955

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Citation Number: 13

Abstract

Abstract Triarylbismuth compounds have been cross-coupled as atom-efficient multicoupling organometallic nucleophiles with 4-bromo-and 4-(trifluoromethylsulfonyloxy) coumarins under palladium catalysis conditions. These reactions afforded an array of 4-arylcoumarins in high yields. The general palladium protocol has been demonstrated to be efficient for the coupling of both bromide and triflate derivatives of coumarins with triarylbismuth reagents.