Scope of the reaction.
| |||
|---|---|---|---|
| Entry | Ar1, Ar2 | R | Yield of 7a (%) |
| 1 | Ph, Ph (6a) | Ph (2a) | 86 (7a) |
| 2 | Ph, Ph (6a) | 4-MeC6H4 (2b) | 75 (7b) |
| 3 | Ph, Ph (6a) | 4-MeOC6H4 (2c) | 66 (7c) |
| 4 | Ph, Ph (6a) | 4-O2NC6H4 (2d) | n.d.b |
| 5 | Ph, Ph (6a) | 1-Naphthyl (2e) | 76 (7d) |
| 6 | Ph, Ph (6a) | 2-Thienyl (2f) | 80 (7e) |
| 7 | Ph, Ph (6a) | Me (2g) | 88 (7f) |
| 8 | 4-MeOC6H4, Ph (6b) | Ph (2a) | 78 (7g) |
| 9 | 2-Naphthyl, Ph (6c) | Ph (2a) | 76 (7h) |
| 10 | 2-Thienyl, Ph (6d) | Ph (2a) | 72 (7i) |
| 11 | Ph, 4-MeC6H4 (6e) | Ph (2a) | 69 (7j) |
| 12 | Ph, 4-MeOC6H4 (6f) | Ph (2a) | 63 (7k) |
| 13 | Ph, 4-O2NC6H4 (6g) | Ph (2a) | 68 (7l) |
| 14 | 4-MeC6H4, Ph (6h) | 4-MeC6H4 (2b) | 78 (7m) |
| 15 | 4-MeC6H4, Ph (6h) | 4-BrC6H4 (2h) | 60 (7n) |
| 16 | 4-MeC6H4, Ph (6h) | Me (2g) | 80 (7o) |
| 17 | 4-O2NC6H4, Ph (6i) | 2-Thienyl (2f) | 65 (7p) |
| 18 | 4-MeC6H4, 4-MeC6H4 (6j) | Me (2g) | 86 (7q) |
a
Isolated yield.
b
Not detected.