Pd-Catalyzed Tandem Chemoselective Synthesis of 2-Arylbenzofurans using Threefold Arylating Triarylbismuth Reagents
作者:Maddali L. N. Rao、Deepak N. Jadhav、Priyabrata Dasgupta
DOI:10.1002/ejoc.201201314
日期:2013.2
A tandem chemoselective synthesis of 2-arylbenzofurans was accomplished from o-hydroxy-gem-(dibromovinyl)benzenes and BiAr3 reagents under palladium-catalyzed conditions. This unique and synthetically valuable strategy proceeds through three consecutive coupling reactions involving triarylbismuth reagents and provides 2-arylbenzofuran products in high yields.
2-芳基苯并呋喃的串联化学选择性合成是在钯催化条件下由邻羟基宝石-(二溴乙烯基)苯和BiAr3试剂完成的。这种独特且具有合成价值的策略通过涉及三芳基铋试剂的三个连续偶联反应进行,并以高产率提供 2-芳基苯并呋喃产品。