Table 1.
entry | ligand | temp (°C) |
conv (%)b |
yield of 1 (%)b |
yield of 2 (%)b |
---|---|---|---|---|---|
1 | L1 | 100 | 100 | 93 | 7 |
2 | L2 | 100 | 100 | 92 | 7 |
3 | L3 | 100 | 100 | 93 | 7 |
4 | L4 | 100 | 53 | 13 | 40 |
5 | L5 | 100 | 100 | 73 | 27 |
6 | L6 | 100 | 27 | 20 | 7 |
7 | L2 | 80 | 100 | 96 | 4 |
8c | L2 | 80 | 94 | 85 | 7 |
9d | L2 | 80 | 100 | 93 | 7 |
10d | L2 | 50 | 100 | 94 | 6 |
11d | L2 | rt | 50 | 48 | 2 |
12e | L2 | rt | 100 | 95 | 5 |
Reaction conditions: 4-Chloroanisole (0.25 mmol), MeOH (1.25 mmol), NaOtBu (0.35 mmol), Pd2dba3 (1 mol %), ligand (4 mol %), 1,4-dioxane (0.5 mL, 0.50 M), 20 h.
Determined by GC.
Pd2dba3 (0.5 mol %), L2 (2 mol %), 24 h.
3 (1 mol %), L2 (1 mol %).
3 (2 mol %),L2 (2 mol %).