| abstract |
PROCEDURE TO PREPARE DIPHENYL ETHERS SUBSTITUTED FOR FORMULA (I), WHERE A IS OXYGEN OR SULFUR; X IS HYDROGEN OR HALOGEN; AND IT IS HALOGEN OR TRIFLUOROMETHYL; Z IS HALOGEN, NITRO OR CYANE, R IS HYDROGEN OR ALCOHYL CONTAINING UP TO THREE ATOMS OF CARBON; R1 AND R2 MAY BE DIFFERENT TYPES OF RADICALS. IT CONSISTS OF REACTING A BENZOYL HALIDE OF FORMULA (II) WITH AT LEAST A STECHIOMETRIC AMOUNT OF A CORRESPONDING AMINOETHER OF THE FORMULA (III), WHERE HAL IS HALOGEN. THE REACTION TEMPERATURE IS LOWER THAN 35GC. THESE COMPOUNDS HAVE HERBICIDAL ACTIVITY. |