反应详情

A mixture of 4-iodobenzonitrile (7.69 g), anhydrous sodium carbonate (6.25 g), hydroxylamine hydrochloride (8.74 g), in water (60 ml) and sufficient ethanol to maintain a clear solution, was heated at 90°-100° C. for 4 hours. The reaction mixture was cooled to ambient temperature and evaporated until a precipitate formed. The solid was collected by filtration, washed with water and recrystallised from acetonitrile to give 4-iodobenzamidoxime (5.97 g), m.p. 155°-161° C.; microanalysis, found: C, 31.4; H, 2.7; N, 10.2%; C7H7IN2 O 0.2H2O requires: C, 31.6; H, 2.81; R, 10.5%; NMR: 5.82(2H,s), 7.46(2H,d), 7.73(2H,d), 9.69(1H,s); m/z 263(M+H).

1. temperaturewas heated at 90°-100° C. for 4 hours
2. customevaporated until a precipitate
3. customformed
4. filtrationThe solid was collected by filtration
5. washwashed with water
6. customrecrystallised from acetonitrile