New Initiation Modes for Directed Carbonylative C–C Bond Activation: Rhodium-Catalyzed (3 + 1 + 2) Cycloadditions of Amino­methyl­cyclo­propanes

Under carbonylative conditions, neutral Rh­(I)-systems modified with weak donor ligands (AsPh3 or 1,4-oxathiane) undergo N-Cbz, N-benzoyl, or N-Ts directed insertion into the proximal C–C bond of amino­methyl­cyclo­propanes to generate rhodacyclo­pentanone intermediates. These are trapped by N-tethered alkenes to provide complex perhydroisoindoles.