反应详情

温度

50 °C

A suspension of 3-iodo-4-isopropoxybenzonitrile (0.576 g; 2 mmol), HCl×NH2OH (0.276 g; 4 mmol) and DIPEA (0.69 ml; 4 mmol) in EtOH (50 ml) was stirred for 18 h at 50° C. The solvent was distilled off and the residue was diluted to 50 ml with EtOAc and washed with H2O. The organic layer was separated, dried over MgSO4 and filtered. The filtrate was distilled off to give the title product (0.61 g; 95%), as colourless solid. 1H-NMR (CDCl3) 8.0 (d, 1H, J=2.22 Hz); 7.55 (dd, 1H, J=9.54, 2.28 Hz); 6.77 (d, 1H, J=8.7 Hz); 4.95 (b, 2H); 4.69-4.63 (m, 1H); 1.42 (d, 6H).

1. distillationThe solvent was distilled off
2. additionthe residue was diluted to 50 ml with EtOAc
3. washwashed with H2O
4. customThe organic layer was separated
5. dry with materialdried over MgSO4
6. filtrationfiltered
7. distillationThe filtrate was distilled off