Zhang Ya-jing
2002
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Journal
Henan Chemical Industry
Abstract
With p -nitroaniline(A) as raw material,2-chloro-4-nitroaniline is prepared by chloridization of nitroaniline with sodium hypochlorite(C) in the solution of hydrochloric acid(B)[ n (A)∶ n (B)∶ n (C)=1∶3∶1].C is added slowly into the reaction solution with stirring within 1.5h at -2~2℃;reaction is continued 6~7h below 5℃,the yield of 2-chloro-4-nitroaniline is more than 95%,its purity is over 98%.