138.
    发明专利
    未知

    公开(公告)号:DK131651C

    公开(公告)日:1976-02-09

    申请号:DK52071

    申请日:1971-02-05

    Applicant: BASF AG

    Abstract: 1329491 Urea derivatives BADISCHE ANILIN- & SODA-FABRIK AG 19 April 1971 [6 Feb 1970] 21209/71 Heading C2C Trisubstituted urea derivatives of the general formula in which R 1 denotes alkyl, cycloalkyl or aryl which may be substituted by F, Cl, Br, I, trifluoromethyl, alkyl, hydroxy, alkoxy, alkylthio, thiocyano, cyano, methylsulphonyl or nitro, R 2 denotes hydrogen, lower alkyl or cycloalkyl, and R 3 denotes a carboxy group, the salt of a carboxy group, an alkoxycarbonyl or aryloxycarbonyl group, or the group R 4 and R 5 denoting hydrogen or an aliphatic radical having 1 to 4 carbon atoms, are prepared by reacting an optionally N-substituted 3-amino propionic acid or derivative thereof with an appropriate isocyanate. Compounds claimed per se: N - phenyl - N 1 - methyl - N 1 - (2 - carboxyethyl) - urea, N - (3,4 - dichlorophenyl) - N 1 - methyl - N 1 - (2 - carboxyethyl) - urea, N - (3- trifluoromethyl - phenyl) - N 1 - methyl - N 1 - (2- carboxyethyl)-urea. The compounds have herbicidal properties.

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