Regioselective palladium-catalyzed cross-coupling reactions in the synthesis of novel 2,3-disubstituted thiophene derivatives
作者:Raquel Pereira、Beatriz Iglesias、Angel R de Lera
DOI:10.1016/s0040-4020(01)00764-5
日期:2001.9
A reactivity optimization study of the palladium-catalyzed cross-coupling reactions of 2,3-dibromothiophene and organometallic reagents has been conducted. Regioselective coupling at the C2 position, accomplished most notably by Suzuki coupling, was combined with a Stille reaction at C3 using Fu's modification, to afford the 2,3-disubstituted thiophene derivatives.
进行了钯,2,3-二溴噻吩与有机金属试剂的交叉偶联反应的反应性优化研究。C2位置的区域选择性偶联(最明显地是通过Suzuki偶联完成的)与Fu修饰在C3的Stille反应结合,得到2,3-二取代的噻吩衍生物。