Table 2.
| |||
---|---|---|---|
entry | R | yield of 5a–d | yield of 4a–d |
1 | 5b, 78%a | 4b, 79% | |
2 | 5a, 73% | 4a, 97% | |
3 | 5c, 39% | 4c, 55% | |
4 | 5d, 36% | 4d, 57% | |
5 | not observed | ||
6 | not observed |
10 mmol scale and the product was isolated by recrystallization.
| |||
---|---|---|---|
entry | R | yield of 5a–d | yield of 4a–d |
1 | 5b, 78%a | 4b, 79% | |
2 | 5a, 73% | 4a, 97% | |
3 | 5c, 39% | 4c, 55% | |
4 | 5d, 36% | 4d, 57% | |
5 | not observed | ||
6 | not observed |
10 mmol scale and the product was isolated by recrystallization.