Table 5 Substrate scope for the construction of indoles.

Reaction conditions: 3 (0.5 mmol, 1 equiv.), CuI (0.2 mmol, 0.4 equiv.), L1* (0.05 mmol, 0.1 equiv.), AgSbF6 (0.05 mmol, 0.1 equiv.), 4 Å MS (150 mg), and NaOtBu (0.1 mmol, 2.0 equiv.) in HFIP/dioxane [3:7 (v/v), 5.0 ml] for 24 to 80 hours at 110°C. Yields were that of isolated products.


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