Wei Wenlong
2007
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Journal
Applied Chemical Industry
Abstract
p-Nitrophenyl isocyanate was prepared from triphosgene and p-nitroaniline.The effects of solvents and its content,reaction time and the mole ratio of raw materials on the yield of p-nitrophenyl isocyanate were studied.The optimum reaction conditions were obtained as follows:the solvent ethyl acetate(its content) 120 mL,the mole ratio of p-nitroaniline to triphosgene 2 ∶1 and reaction time 5 h.The results of parallel tests showed that under such optimum condition the yield of p-nitrophenyl isocyanate could reach 66.0%.