Five novel cis-3-(2-chloro-3,3,3-trifluoropropenyl)-2,2-dimethylcyclopropyl formyl thiourea derivatives(4a～4e) have been synthesized. Their structures are characterized by 1H NMR, IR and elemental analysis. The preliminary herbicidal tests indicate the compound 4a shows a better inhibitory activity to broad leaf plant, 4d and 4e to monoctyledon plant, respectively.
Eight N (substituted pyrimidin 2 yl) N β (or γ )pyridinecarbonyl thioureas are synthesied and tested for biological activity.All of them are new compounds and their structures are comfirmed by IR, 1HNMR and elementary analysis.The preliminary biological test shows that some of the target compounds have excellent inhibitory activities against root and stalk of dicotyledon plant (such as rape) and a good regulating activity for plant growth of monocotyledon(such as corn).
