Table 1.
| |||||
---|---|---|---|---|---|
Entry | 7 | R | R′ | 8 | Yield [%] |
1 | 7a | Me | Me | 8a | 67 (75)[a] |
2 | 7b | Et | Et | 8b | 50 |
3 | 7c | iPr | iPr | 8c | 40 |
4 | 7d | morpholine | 8d | 49 | |
5 | 7e | Me | H | 8e | 34 |
6 | 7f | Et | H | 8f | 40 |
7 | 7g | iPr | H | 8g | 66 |
8 | 7h | tBu | H | 8h | 85 |
Reaction conducted with 10 mol% precatalyst.