| abstract |
Process for obtaining N-oxalyl- derivatives of N-phenyl-amino acids or N-phenyl-amino acid esters of the general formula ** (Formula) ** where R1 means hydrogen, alkyl or halogen, R2 means hydrogen or alkyl, R3 represents hydrogen or alkyl, R4 represents hydrogen, alkyl or phenyl, optionally substituted, R5 represents hydrogen, alkyl, cyanalkyl, alkenyl, alkynyl, haloalkyl, cycloalkyl, cycloalkylalkyl, alkoxyalkyl, alkoxyalkoxyalkyl, alkoxycarbonylalkyl, alkylticalkyl-alkylsulfylalkyl, alkylticalkyl-alkylamino-dialkyl, alkylticalkylkylalkyl, alkyl or aryl and aralkyl, optionally substituted, R6 stands for alkyl, cyanalkyl, alkenyl, alkynyl, haloalkyl, cycloalkyl, cycloalkylalkyl, alkoxyalkyl, alkoxyalkoxyalkyl, alkoxycarbonylalkyl, alkylthioalkyl, alternatively alkylsulfinylalkylalkyl, alternatively alkylsulfinylalkylalkyl, alternatively alkylsulfinylalkyl-enkyl substituted, aralkyl or aroxyalkyl, epoxyalkyl. |