Methanol → 5-Aminopyridine-2-carboxamide
反応式
C[OH:2].[NH2:3][C:4]1[CH:5]=[CH:6][C:7]([C:10]#[N:11])=[N:8][CH:9]=1>O>[NH2:3][C:4]1[CH:5]=[CH:6][C:7]([C:10]([NH2:11])=[O:2])=[N:8][CH:9]=1参加物
4
反応条件
- 温度
- 50 °C
実験手順
MeOH (30 mL) was added into the mixture of 5-aminopyridine-2-carbonitrile (1191 mg, 10.00 mmol), NaBO3.H2O (2995 mg, 30.00 mmol), and H2O (30 mL), and the mixture was then heated at 50° C. for 16 h. The mixture was then concentrated in vacuo, then treated with water (30 mL), and extracted with EtOAc (4×50 mL). The combined extracts were dried over MgSO4, filtered, and concentrated in vacuo to obtain a yellow solid. The solid was triturated with 40 mL of 40% EtOAc/hexane to yield the title compound as yellow solid. 1H NMR (DMSO-d6, 400 MHz): δ=5.86 (s, 2H), 6.89 (dd, 1H, J=2.4 & 8.4 Hz), 7.07 (brs, 1H), 7.59 (brs, 1H), 7.64 (d, 1H, J=8.4 Hz), 7.83 (d, 1H, J=2.4 Hz). MS (ES+): m/z 138.18 (100) [MH+]. HPLC: tR=0.75 min (ZQ2000, polar—5 min).