反应详情

温度

5 °C

To a cold solution of 4-cyanoaniline (6.0 g, 0.050 mol) in conc. HCl was added aq. solution of sodium nitrite (3.85 g, 0.055 mmol) at −15° C. The reaction mass was stirred at 0-10° C. for 15 minutes and filtered off to remove insolubles. The filtrate was added to stannous chloride in conc. HCl (24.0 g, 0.166 mmol). The reaction mass was stirred at −15° C. for 30 minutes. The reaction mass was filtered to afford 5.2 g of desired product. 1H NMR (300 MHz, DMSO d6): δ 7.04 (d, 2H), 7.70 (d, 2H), 9.17 (br s, 1H), 10.66 (br s, 2H).

1. filtrationfiltered off
2. customto remove insolubles
3. stirringThe reaction mass was stirred at −15° C. for 30 minutes
4. filtrationThe reaction mass was filtered