| abstract |
Novel herbicides of the formula ##STR1## in which R 1 represents alkyl, n R 2 represents hydrogen, alkyl, alkylcarbonyl, alkoxycarbonyl, alkylsulphonyl, alkenyl, alkinyl or optionally substituted aralkyl, and n R 3 represents optionally substituted aryl. n Intermediates of the formula ##STR2## in which R 6 is hydrogen, chlorine or hydroxyl, n are also new. |