Table 6.
Entry | Ar | X | Ar′ | Cat (%) |
Conditions | Yield (%)b |
---|---|---|---|---|---|---|
1 | 2-Py | Cl | 4-Tol | 0.1 | 100 °C, 24 h | 86 |
2 | Br | 4-Tol | 0.05 | 60 °C, 48 h | 95 | |
3 | Cl | 1-Naphathyl | 0.05 | 100 °C, 24 h | 98 | |
4 | 3-Py | Cl | 4-Tol | 0.05 | 100 °C, 24 h | 93 |
5 | Cl | 2-Anisyl | 0.05 | 100 °C, 24 h | 99 | |
6 | Cl | 2-Py | 0.5 | 100 °C, 24 h | 97 | |
7 | Br | 4-Anisyl | 0.05 | 100 °C, 48 h | 80 | |
8 | I | 4-Anisyl | 0.05 | 100 °C, 24 h | 97 | |
9 | Br | 2-Pyrimidyl | 1.0 | 110 °C, 20 h | 96 | |
10 | Br | 2-Prazinyl | 1.0 | 110 °C, 20 h | 92 | |
11c | 1,3-Pyrimidyl-5- | Br | 4-Tol | 1.0 | 100 °C, 48 h | 52 |
12 | 4-isoQuinolinyl | Br | 4-Tol | 0.05 | 100 °C, 38 h | 84 |
13 | Ph | Cl | 4-Tol | 0.05 | 100 °C, 24 h | 99 |
14 | Br | 4-Tol | 0.005 | 110 °C, 20 h | 95 | |
15 | Br | 2-Py | 1.0 | 100 °C, 30 h | 81 | |
16 | Br | 2-benzothiazolyl | 1.0 | 100 °C, 36 h | 62 | |
17 | 4-Tol | Cl | 4-Anisyl | 0.05 | 100 °C, 24 h | 99 |
18 | Br | 4-Anisyl | 0.05 | 100 °C, 48 h | 97 | |
19 | 3-Anisyl | Cl | 4-Anisyl | 0.05 | 100 °C, 24 h | 99 |
20 | Br | 4-Anisyl | 0.05 | 100 °C, 48 h | 94 | |
21 | 2-Tol | Br | 4-Tol | 0.05 | 100 °C, 48 h | 96 |
22 | I | 4-Tol | 0.05 | 100 °C, 24 h | 99 | |
23 | 2,5-DiMephenyl | Br | 4-Tol | 0.5 | 100 °C, 48 h | 89 |
24 | 2-Cyclohexylphenyl | Br | 4-Tol | 0.05 | 100 °C, 48 h | 89 |
Reactions conducted with a 1:1 ratio of metal to ligand, 1 mmol ArX (X = Cl, Br, I), 1.2 equiv amine and 1.4 equiv NaOtBu in 1 mL DME.
isolated yield.
Using K3PO4 as the base.