| abstract |
The present invention relates to novel 2,5-bis {[alkyl (or aryl) imino] aminophenyl} furans and thiophenes of the general formula n n n in which R 1 , R 2 , R 3 and R 4 are each independently selected from the group consisting of H, alkyl, alkoxy, halide, and alkylhalide groups; R 5 is H, alkyl or aryl; R 6 is H, alkyl, aryl, or NR 7 R 8 , in which R 7 and R 8 are each independently selected from the group consisting of H, alkyl and aryl; and X is O, S or NR 9 , in which R 9 is H or alkyl, and to the use of such compounds. |