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A) Reaction of 9 with 3‐methylindole (39). Reagents, conditions, and yields of isolated products: a) 9 (1.5 equiv), Cs2CO3 (1.0 equiv) 0 °C, DCM, 2 h, 40 (50 %), 41 (30 %). Molecular structures of compounds 40 and 41 in the solid state. Anisotropic displacement shown at 30 % probability level. Only selected hydrogen atoms are shown.24 B) Reaction of 9 with 42 and 44. Reagents, conditions, and yields of isolated products: a) 9 (1.5 equiv), CH3CN, RT, 15 min, 43 (76 %), 45 (86 %).
