Table 14.
entry | RH | conditions | 447 | yield (%) |
---|---|---|---|---|
1 | H2O | 100 °C, 0.5 h | 447a | 94 |
2 | MeOH | 65°C, 5 h | 447b | 76 |
3 | morpholine | Δ, 12 h | 447c | 97 |
4 | NH2OH | EtOH, 78 °C, 2 h | 447d | 62 |
5 | NH2NH2 | xylenes, Δ Dean-Stark, 5 h |
447e | 63 |
6 | NH2NHPh | xylenes, Δ Dean-Stark, 12 h |
447f | 64 |