Pd(0)-catalyzed couplings using bromide and chloride derivatives of Baylis–Hillman adducts with triarylbismuths as atom-efficient multi-coupling nucleophiles
作者:Maddali L.N. Rao、Debasis Banerjee、Ritesh J. Dhanorkar
DOI:10.1016/j.tet.2010.03.020
日期:2010.5
triarylbismuths affording allylic arylated products in high yields under palladium-catalyzed conditions. Triarylbismuths have been employed in sub-stoichiometric amounts as multi-coupling and atom-efficient nucleophiles in these reactions. The reactivity of both allylic bromides and chlorides was found to be facile and equally efficient in couplings with triarylbismuths.
事实证明,在钯催化的条件下,Baylis-Hillman加合物的溴化物和氯化物衍生物可与三芳基铋有效反应,从而以高收率提供烯丙基芳基化产物。在这些反应中,三芳基铋已以低于化学计量的量用作多偶联和原子有效的亲核试剂。发现烯丙基溴和氯化物的反应性都容易并且在与三芳基铋的偶联中同样有效。