作者:Ann Christin Reiersølmoen、Thomas N Solvi、Anne Fiksdahl
DOI:10.3762/bjoc.17.18
日期:——
give moderate to excellent yields (50–96%) of the corresponding novel tetra-coordinated N,N,N,N-Au(III) complexes with alternating five- and six-membered chelate rings. The testing of the catalytic ability of the cyclam-based N,N,N,N-Au(III) complexes demonstrated high catalytic activity of some complexes in selected test reactions (full conversion in 1–24 h, 62–97% product yields).
手性Cyclam(1,4,8,11-四氮杂环十四烷)衍生物是通过手性单-Boc-1,2-二胺和(二烷基)丙二酰二氯通过开放的二酰胺-双(N -Boc-氨基)中间体逐步合成的(65– 91%)。脱保护并用第二个丙二酰单元进行闭环,获得了环己四酰胺前体(80-95%)。新的方案允许通过最终优化的氢化物还原来制备目标环体衍生物(53–59%)。开放的四胺中间体和cyclam衍生物均成功地与AuCl 3配位,从而给出了相应的新型四配位N,N,N,N的中等至优异的收率(50-96%)-Au(III)配合物,具有交替的五元和六元螯合环。对基于Cyclam的N,N,N,N -Au(III)配合物的催化能力进行测试,表明某些配合物在选定的测试反应中具有较高的催化活性(在1–24 h内完全转化,产品产率为62–97% )。