acetic acid followed by equimolar amounts of conc. HNO3 in either acetic or other fatty acid and finally treated with aqs. alkali chloride to dealkylate the sulphonium salt. The chlorination is pref. carried out at 0-40 degrees C. and the nitration at 30-90 degrees C.SIRRENBERG,WILHELM,...
The nitration is performed using conc. HNO3-conc. H2SO4 mixt. (both acids 90-100 wt%) in wt. ratio 1:0.5 5, at an initial temp. of 0-20 deg C, with final temp. 10-30 deg C. The redn. may be carried out either by dissolving metals (Fe or Zn) or catalytically using ...
A soln. of 2,3-xylenol (122 g.), caustic soda (40 g.) and sodium nitrite (82.8 g.) in water (250 cc) was slowly added to a mixture of conc. HCl (250 cc) and water (350 cc) at 0-5 deg.C, allowed to stand for 30 mins. and then treated with conc. HNO3 (300 ml) at...