L. Hui-ping
2005
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Journal
Fine chemicals
Abstract
1,2-Dichloro-4-nitrobenzene was prepared by reaction of 1-chloro-4-nitrobenzene(PNCB) with chlorine in a specially designed tower chlorinator in the presence of Lewis acid catalyst.The optimum reaction conditions were:m(cat.)/m( PNCB)=5.5%~6.0%,flowrate of chlorine 3.5~4.5 mL/s,reaction temperature 95~100 ℃ and reaction time 6 h.The yield of 1,2-dichloro-4-nitrobenzene was 83.26%,higher than that acquired in a flask reactor.