Table 2.
Entry | Ar1 | Ar2 | R | Yield |
---|---|---|---|---|
1 | 4-pyridyl | phenyl | H | 89% |
2 | 4-pyridyl | 4-MeO-phenyl | H | 85% |
3 | 4-pyridyl | 4-EtO2C-phenyl | H | 92% |
4 | 4-pyridyl | 4-F3C-phenyl | H | 83% |
5 | 4-pyridyl | 4-NC-phenyl | H | 79% |
6 | 4-pyridyl | 4-F-phenyl | H | 51% |
7 | 4-pyridyl | 3-Me-phenyl | H | 86% |
8 | 4-pyridyl | 3-OHC-phenyl | H | 32% |
9 | 4-pyridyl | 2-MeO-phenyl | H | 82% |
10 | 4-pyridyl | 2-Me-phenyl | H | 49% |
11 | 4-pyridyl | 1-naphthyl | H | 78% |
12 | 4-pyridyl | phenyl | H | 80% |
13 | 4-pyridyl | phenyl | H | 84% |
14 | phenyl | phenyl | H | 80% |
15 | 4-MeO-phenyll | phenyl | H | 64% |
16 | 2-F3C-phenyl | phenyl | H | 50% |
17 | 4-pyridyl | phenyl | Me | 20% a |
18 | 4-pyridyl | phenyl | Et | 8% a |
a Microwave heating, 140 °C, 15 min.