| 摘要 |
Compounds of the general formula <FORM:1079205/C2/1> wherein R1 represents a methyl, methoxy or isobutynyl radical, R2 represents a C1 to C4 alkyl radical optionally substituted by a hydroxyl group, a C3 or C4 alkenyl radical bearing two or three chlorine atoms, or the 2,3,6-trichlorobenzyl radical, X represents a hydrogen or chlorine atom and the R2SCH2- and X-groups are in the m or p positions relative to the amido group, may be prepared by heating N - chloromethylphenyl- or N - chloromethyl-chlorophenyl - N1 - dimethyl or -N1 - methyl-N1-isobutynyl -ureas with the corresponding alkenyl- or trichlorobenzyl-mercaptans or their metal salts in the presence of acid binding agents, e.g. trialkylamines. The compounds of the invention have herbicidal activity.ALSO:Herbicidal compositions contain compounds of the general formula <FORM:1079205/A5-A6/1> wherein R1 represents a methyl, methoxy or isobutynyl radical, R2 represents a C1 to C4 alkyl radical optionally substituted by a hydroxyl group, a C3 or C4 alkenyl radical bearing two or three chlorine atoms, or the 2, 3, 6-trichloro-benzyl radical, X represents a hydrogen or chlorine atom and the R2SCH2- and X-groups are in the m or p positions relative to the amido group, in admixture with conventional carriers. The compositions may also contain other, unspecified, active substances, fertilizers and emulsifiers and dispersing agents, e.g. the salts of alkylbenzene-sulphonic acids and of ammonium compounds, oxalkylated phenol derivatives and sodium lignin sulphonate. |
