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E Factor and recycle studies. a) 5-bromopyrimidine (0.5 mmol, 1.0 equiv), Ar-Bpin (0.53 mmol, 1.05 equiv), 16 (0.0075 mmol, 1.5 mol %), MeMgBr (0.0075 mmol, 1.5 mol %), K3PO4 (0.18 mmol, 0.35 equiv), *TPGS-750-M (3 wt %) 1 mL, 45 °C, 6 h. TPGS-750-M was recycled in all runs. In each recycle, freshly generated active catalyst (0.0075 mmol) and K3PO4 (0.18 mmol) were added (see SI for details).
