Δ3-Aryl/heteroaryl substituted heterocycles via sequential Pd-catalysed termolecular cascade/ring closing metathesis (RCM)
作者:H.Ali Dondas、Blandine Clique、Bekir Cetinkaya、Ronald Grigg、Colin Kilner、James Morris、Visuvanathar Sridharan
DOI:10.1016/j.tet.2005.08.078
日期:2005.11
A novel sequential Pd-catalysed termolecular allenylation cascade/Ru catalysed RCM process affords a diverse range of Δ3-aryl/heteroaryl substituted five–seven membered nitrogen and oxygen heterocycles. Further elaboration, via 1,3-dipolar cycloaddition, in selected cases, afforded fused heterocyclic ring systems.
一种新的连续的Pd-催化的三分子allenylation级联/钌催化的RCM方法提供Δ的不同范围的3 -芳基/杂芳基取代的五至七元氮和氧杂环。在某些情况下,通过1,3-偶极环加成反应进一步精制,得到稠合的杂环系统。