Hydroxynaphthalenedicarboxylic acid hydrazide dimer and derivatives thereof as well as process for preparing them
The present invention provides a hydroxynaphthalenedicarboxylic acid hydrazide dimer or a derivative thereof represented by formula (1): wherein X 1 and X 2 are independently selected from the group consisting of carboxyl group, a group represented by formula (2) and a group represented by formula (...
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| Format: | Patent |
| Sprache: | eng ; fre ; ger |
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| Zusammenfassung: | The present invention provides a hydroxynaphthalenedicarboxylic acid hydrazide dimer or a derivative thereof represented by formula (1):
wherein X 1 and X 2 are independently selected from the group consisting of carboxyl group, a group represented by formula (2) and a group represented by formula (3):
-CO-NH-Z(2)
-CO-NHNH 2 (3)
Y 1 and Y 2 are independently selected from the group consisting of carboxyl group, carbamoyl group, a group represented by formula (2), a group represented by formula (3) and a group represented by formula (4):
-CO-O-A(4)
provided that at least one of X 1 , X 2 , Y 1 and Y 2 is a group represented by formula (3). |
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