| abstract |
(WHEREIN R1, R2 and R3 have the same meanings as mentioned above and n is 0, 1 or 2,) with p-chloronitrobenzene in the presence of an acid binding agent. Said new compounds have a selective and lasting herbicidal effect. WHEREIN R1 represents a lower alkyl or allyl radical, R2 represents a hydrogen or chlorine atom or a methyl radical, R3 represents a hydrogen or chlorine atom, R2 and R3 may be identical or different and n is 0, 1 or 2; said compounds are manufactured by condensing phenol compounds having the general formula New compounds having the general formula |