Study on Synthesis and Herbicidal Activity of Heterocyclic Compounds Containing P-P Bond

摘要

N,N’-diphenylurea reacted with phosphorus trichloride and phenyl dicklorophospbane giving theheterocyclic compounds 1 and 2 with a direct phosphorus-phosphorus bond (P-P bond ), respectively. The newcompounds were characterized by elementary analysis, NMR and IR spectra. The results or preliminary bioassay showed that these heterocycles possess selective herbicidal activity at 1.5 kg/hm2.