An efficient synthesis of spiroaminals over fused aminals has been successfully developed by bimetallic Au/Sc catalysis by using TMS as a traceless controlling group.
Catalytic activity of gold nanoclusters in intramolecular hydroamination of alkenes and alkynes with toluenesulfonamide under aerobic and basic conditions
作者:Hiroaki Kitahara、Hidehiro Sakurai
DOI:10.1016/j.jorganchem.2010.08.038
日期:2011.1
nanoclusters stabilized by a hydrophilic polymer, poly(N-vinyl-2-pyrrolidone) (Au:PVP), catalyzed the intramolecularhydroamination of toluenesulfonamides to unactivated alkenes/alkynes in EtOH under aerobic and basic conditions. The reaction proceeds via anti-addition of toluenesulfonamide to the alkenes assisted by π-activation of the gold clusters.