IL40934A - Phenylformamidines and herbicidal compositions containing them - Google Patents

Claims (1)

1. ' 40934/2 or an addition salt thereof, wherein y represents oxygen or sulphur, R2 represents hydrogen or a methyl, ethyl, n-propyl, isopropyl or n-butyl radical and represents an alkenyl radical with 3 or 4 carbon atoms which may be substituted by one or two chlorine atoms, o-r represents a benzyl radical which is unsubstituted or substituted by chlorine and/or methyl. 3. An agent according to claim 1, which contains as active substance N- [ 2-methyl-4- (β-chloroallyloxy) -phenyl] -N* , ' -dimethylformamidine of the formula or an addition salt thereof. 4. An agent according to claim 3, which contains as addition salt the hydrochloride, sulphate or tosylate. 5. An agent according to claim 1, which contains as active substance N- [2-methyl-4- (o-chlorobenzyloxy) -phenyl] N ' , ' -dimethylformamidine of the formula or an addition salt thereof. 6. An agent according to claim 5, which contains addition salt the hydrochloride, sulphate or tosylate. 40934/2 7. An agent according to claim 1, which contains as active substance N- [ 2-methyl-4- (/3-chloroallylthio) -phenyl] N ' ,Ν' -dimethylformamidine of the formula or an additio salt thereof. 8. .' An agent according to claim 7, which contains as addition salt the hydrochloride, sulphate or tosylate. 9· , A" method of killing undesirable vegetation, which comprises applying to the plant habitat an agent as claimed in claims 1 to 8. 10. Phen lformamidines of the formula or the addition salts thereof with inorganic or organic acids, wherein y represents oxygen or sulphur, represents an alkyl radical with at most 4 carbon atoms, R2 represents hydrogen or an alkyl radical with at most 4 carbon atoms, represents an alkenyl radical with 3 or 4 carbon atoms which may be substituted by one or two chlorine or bromine atoms or an 40934/2 alkinyl radical with 3 or 4 carbon atoms, or represents a benzyl radical which is unsubstituted or contains one or more of the substituents halogen, alkyl with at most 4 carbo atoms, alkoxy with at most 4 carbon atoms, represents an alkyl radical containing at most 4 carbon atoms, a halogen . atom or the CF^ group, and n is 0, 1 or 2. 11. Phenylformamidines according to claim 10 of the formula or the addition salts thereof, wherein y represents oxygen ,11.72 or sulphur, R2 represents hydrogen or a methyl, ethyl, n- propyl, isopropyl or n-butyl radical and R^ represents an alkenyl radical with 3 or 4 carbon atoms which may be substituted by one or two chlorine atoms, or represents a benzyl radical which is unsubstituted or substituted by chlorine and/or methyl. 12. N- [2-methyl-4-(/3-chloroallyloxy) -phenyl] -N' ,Ν' -di- methylformamidine of the formula or an addition salt thereof, according to claim 11. 13 , The compound according to claim 12, in the form the hydrochloride, sulphate or tosylate. .14. N- [2-methyl-4-(o-chlorobenzyloxy) -phenyl] -Ν' ,Ν' - dimethylformamidine of the formula 2 o an addition salt thereof. ' , · 15 . The compound according to claim 14, in the form of I the hydrochloride, sulphate or tosylate. 29.11.72 .16. N-[2-methyl-4-(p-chloroallylthio) -phenyl] -Ν',Ν' -dimethylformamidine of the formula or an addition salt thereof. 29.11·,72; 17;, The compound according to claim 16, in the form of ' ' · ' . the hydrochloride, sulphate or tosylate. ' ί · · ·" . ' ' · ■ '