title: [On the phytotoxicity of some N 1-phenyl-N 1- alkylureas].
abstract: A series of N1-phenyl-N1-alkylureas (E) and a series of N-carbamoyl derivatives of tetrahydroquinoline (D) were prepared and studied for phytotoxicity. The substances studied (Tables I, II, substances i leads to xxvii) were mostly new compounds and were prepared from suitable secondary amines by condensation with alkylating agents. Biological tests involved pre- and post-emergence treatment of five common weeds with doses of 6 kg/ha and lower doses (Tables i, ii). The tetrahydroquinoline derivatives (I leads to VII) proved inactive except for the N-dimethylcarbamoyl derivative (III) which on foliar absorption showed selective phytotoxicity against Vicia sativa L. Most of the members of the N1-phenyl-N1-alkylurea class (VIII leads to XXVII) did not have wide spectrum phytotoxicity. Some compounds have however interesting specificity of action against Vicia sativa L.
mesh_terms: D000478:Alkylation; D055598:Chemical Phenomena; D002621:Chemistry; D006540:Herbicides / Q000138:chemical synthesis / Q000633:toxicity*; D010671:Phenylurea Compounds / Q000138:chemical synthesis / Q000633:toxicity*; D013329:Structure-Activity Relationship
chemical_list: D006540:Herbicides; D010671:Phenylurea Compounds
vernacular_title: Sulla fitotossicità di alcune N1-fenil-N1-alchiluree