反应详情

Methyl 4-nitrobenzoate (5.42 g; 29.92 mmol; 1 eq.) is dissolved in EtOH (120 ml). Hydrazine hydrate (7.27 ml; 149.60 mmol; 5 eq.) is added and the mixture is stirred 1 hour at rt. It is stirred at 60° C. for 6 hours and rt overnight. The precipitate formed is filtrated and dried under vacuo, affording 4-nitrobenzohydrazide as white-off solid (4.31 g; 79%). 1H NMR (DMSO-d6) δ: 4.63 (s, 2H), 8.03 (d, J=9 Hz, 2H), 8.23 (d, J=9 Hz, 2H), 10.12 (s, 1H). HPLC (method A), Rt: 0.78 min (purity: 100.0%).

1. stirringIt is stirred at 60° C. for 6 hours and rt overnight
2. customThe precipitate formed
3. filtrationis filtrated
4. customdried under vacuo