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Results of leaching (left) and cycle (right) experiments. Reaction conditions: 1a (0.5 mmol), 2a (2 equiv), 3a (1.5 equiv), NaO t Bu (1.5 equiv), recycled CuCl@POL‐NHC‐Ph (20 mg), DMF (0.25 M), 60 °C, 7 h. Isolated yield. The filtering time is ≈1 min.
