METHOD FOR CONTROLLING WEEDS WITH 1{40 -FORMYL-1{40 -HALOBENZENEAZOMETHANES AND FORMULATIONS THEREFOR

摘要

Some new 1'-formyl-1'-halobenzeneazomethanes have been prepared. The compounds are active as herbicides. There is variable activity against arthropod pests from compound to compound. The 1'-formyl group can be substituted so as to form a keto or ester functional group. Alkyl, haloalkyl, and cycloalkyl substituent groups form ketones according to the invention. Alkoxy, haloalkoxy, and cycloalkoxy substituent groups form esters according to the invention. The 1'-halogen can be bromine, chlorine, or fluorine; and the benzene ring of the azobenzene group can be variously substituted with halogens (preferred), alkyl, alkoxy, and haloalkyl groups. In addition, the methyl carbon (1'-position) can have another halogen atom substituent, or an alkyl, haloalkyl, cycloalkyl, or phenyl substituent group. The invention comprehends the use of the new 1'-formyl-1'-halobenzeneazomethanes as herbicides, and further comprehends new formulations for effecting the new use. Both a method of using and herbicidal formulations of the new 1'-formyl-1'-halobenzeneazomethanes are described.