| 摘要 |
This invention provides for novel benzophenone ureas, a method for preparing the same, and a method for controlling undesirable broadleaf weeds and grasses therewith, wherein said benzophenone is represented by the generic formula: <IMAGE> where A and B each represent hydrogen, methyl, halogen, trifluoromethyl, or methoxy; R1 and R2 are taken singly or in combination and represent hydrogen, lower alkyl, alkoxy, alkoxy, alkoxyalkyl, cycloalkyl, cyclohetero, loweralkylamino, lower alkenyl or lower alkynyl, with the proviso that A is either meta or para to the -NH-CO-NR1R2 substituent.
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