Feng Shi-long
2006
Citations
0
Influential Citations
0
Citations
Journal
Zhejiang Chemical Industry
Abstract
3,5-Dichloro-2,4-difluoroaniline was synthesized by chlorination,reduction reaction from 2,4-difluoronitrobenzene.2,6-Difluorobenzamide was synthesized by fluorination and hydrolysis from 2,6-dichlobenil.An acylation reaction of 2,6-Difluorobenzamide and bis(trichloro-methyl)carbonate produced 2,6-difluorobenzoly isocyanate.Insecticide Teflubenzuron was synthesiged by the reaction of 2,6-difluorobenzoly isocyanate and 3,5-dichloro-2,4-difluoroaniline.Overall yield is 75.3.The product has characteristics of ready availability of reactant,high yield,good quality,little contamination to environment.