N‐Fused Indolines through Non‐Carbonyl‐Stabilized Rhodium Carbenoid CH Insertion of N‐Aziridinyl Imines

Under rhodium catalysis, N-aziridinyl imines provided access to N-fused indolines through non-carbonyl-stabilized rhodium carbenoid CH insertion. The utility of this methodology for the synthesis of architecturally complex heterocycles was further demonstrated by an expedient total synthesis of (±)-cryptaustoline (see scheme).