反应详情

温度

95 °C

A suspension of 4-hydroxycarbostyril (1.5g; 0.0093 mole) in glacial acetic acid (10 ml) was well stirred during the addition of concentrated nitric acid (2.5 ml, d, 1.42) and the mixture shaken at 95°C for a few minutes until dissolution was complete. The deep red solution soon deposited yellow crystals which after cooling were filtered off and washed with acetic acid and then ethanol. Drying in vacuo over phosphorous pentoxide afforded analytically pure 3-nitro compound m.p. 216°C (decomp) (Found C, 52.74; H, 3.14; N, 13.57; C9H6N2O4 required; C, 52.44; H, 2.93; N, 13.59%).

1. temperatureThe deep red solution soon deposited yellow crystals which after cooling
2. filtrationwere filtered off
3. washwashed with acetic acid
4. dry with materialDrying in vacuo over phosphorous pentoxide
5. customafforded analytically pure 3-nitro compound m.p. 216°C (decomp) (Found C, 52.74; H, 3.14; N, 13.57; C9H6N2O4 required; C, 52.44; H, 2.93; N, 13.59%)