Figure 3 : Scope of Rh-catalyzed redox-neutral [4+2] imine/alkyne annulation.

From: Merging rhodium-catalysed C–H activation and hydroamination in a highly selective [4+2] imine/alkyne annulation

Figure 3

General reaction conditions: 1 (0.28 mmol for Method A, 0.31 mmol for Method B), 2 (0.31 mmol for Method A, 0.28 mmol for Method B); [Rh(cod)2]BF4 (6, 5.0 mol%), DPEphos (7, 6.0 mol%), toluene (1.0 ml), 100 °C, 24 h; averaged yield of isolated products from two runs.