Synthesis and Biological Evaluation of Novel N-Benzoxazolonyluracils as Protox-Inhibitor

Protoporphyrinogen oxidase inhibitor has become the focus research field as herbicides.Seven novel N-benzoxazolonyluracils were obtained by cyclization of 6-aminobenzoxazolone derivatives with ethyl 3-dimethylcarbamoylamido-4,4,4-trifluorocrotonate and then methylation or amination, and the reaction yields were between 59%-86%. The chemical structures of the compounds were identified by Elemental Analysis, MS and ^1H NMR. Biological results indicate that some compounds exhibit excellent control of broadleaf weeds at post-emergence by low dosage 18.75 ga.i/ha, but are not effective for grass weeds below dosage 37.5 ga. i/ha. In addition, these compounds show no damage at high-dosage 150 ga. i/ha to wheat and corn, but are unsafe to dicotyledonous plants such as cole, soybean and sorghum even at lower dosage 18.75 ga. i/ha.     

Synthesis of Dibenzylidene Sorbitol Series Compound

Dibenzylidene sorbitol compounds are useful astransparency-improving agents for polypropylene andother resins, agents for gelling organic liquids, flow-ability-improving agents for paint, inks, adhesives,and other compositions, and solidifying agents for …