Table 2.
| ||
---|---|---|
entry | amount of TFA | yield of 30 over three steps from 21 (%) |
1 | 2 equiv | 37 |
2 | 15 volume % | 50 |
3 | 100 volume % | 22 |
| ||
---|---|---|
entry | amount of TFA | yield of 30 over three steps from 21 (%) |
1 | 2 equiv | 37 |
2 | 15 volume % | 50 |
3 | 100 volume % | 22 |