Synthesis of Insecticide Triflubenzuron

Dichloro 2,4 difluoroaniline was synthesized by nitronation, chlorination, fluorination and reduction from 1,2,4 trichlorobenzen with the recovery of 72%. 2, 6 Difluorobenzamide was synthesized by fluorination and hydrolysis from 2,6 dichlobenil with the recovery of 92%. Triflubenzuron was synthesized by addition from 3,5 dichloro 2,4 difluoroaniline and 2,6 difluorobenzoly iss cyanate with the recovery of 93%.