Table 1.
entry | reaction conditions | time | isolated yield (%) |
1 | DIB, TEA, MeOH | 2 h | complex mixture |
2 | DIB, HFIP | 2 h | complex mixture |
3 | DIB, CH2Cl2 | overnight | 55 |
4 | PIFA, CH2Cl2 | overnight | 16 |
entry | reaction conditions | time | isolated yield (%) |
1 | DIB, TEA, MeOH | 2 h | complex mixture |
2 | DIB, HFIP | 2 h | complex mixture |
3 | DIB, CH2Cl2 | overnight | 55 |
4 | PIFA, CH2Cl2 | overnight | 16 |