Silver(I)- and Base-Mediated [3 + 3]-Cycloaddition of <i>C</i>,<i>N</i>‑Cyclic Azomethine Imines with Aza-oxyallyl Cations

A silver­(I) and base-mediated [3 + 3]-cycloaddition reaction of in situ generated <i>C</i>,<i>N</i>-cyclic azomethine imines with in situ formed aza-oxyallyl cations is reported. This one-pot cycloaddition process shows broad substrate scope an excellent functional group tolerance and provides the corresponding biologically important isoquinoline-fused triazines in good to excellent yields.