Table 2.
Conditions A: 1. CuCl (20 mol %), PhCH3, 105 °C, 4 Å MS (reaction times 5–16 h, see Supporting Information for each reaction); 2. +DABCO (40 mol %) for 3–10 h.
Conditions B: 1. CuCl (15 mol %), L (17 mol %), PhCF3, 120 °C, 4 Å MS for 5 h; 2. +DABCO (40 mol %) for 3 h.
Conditions C: CuCN (20 mol %), L (22 mol %), PhCH3, 120 °C, 4 Å MS for 41 h.
Conditions D: 1. CuCl (20 mol %), L (22 mol %), PhCF3, 105 °C, 4 Å MS for 17 h; 2. +DABCO (34 mol %) for 3 h. Ligands were complexed with [Cu] for 2 h.