Novel aromatic polyimides containing symmetric, bulky di-tert-butyl substituents unit were synthesized from 1,4-bis(4-aminophenoxy)2,5-di-tert-butylbenzene (BADTB) and various aromatic tetracarboxylic dianhydrides by the conventional twostage procedure that included ring-opening polyaddition in a po
Synthesis of Methyl 5(6)-(4-Aminophenoxy)- and 5(6)-(2-Aminophenoxy)-2-benzimidazolyl Carbamates and Their Biological Properties.
โ Scribed by V. S. Pilyugin; A. N. Mikhailyuk; V. M. Kosareva; G. E. Chikisheva; G. V. Kiseleva; S. L. Kuznetsova; T. P. Vorobyeva; E. V. Klimakova
- Publisher
- John Wiley and Sons
- Year
- 2005
- Weight
- 21 KB
- Volume
- 36
- Category
- Article
- ISSN
- 0931-7597
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2,6-Bis(4-aminophenoxy)naphthalene (2,6-BAPON) was synthesized in two steps from the condensation of 2,6-dihydroxynaphthalene with p-chloronitrobenzene in the presence of potassium carbonate, giving 2,6-bis(4-nitrophenoxy)naphthalene, followed by hydrazine hydrate/Pd-C reduction. A series of new pol
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The diamine 1,4-bis(4-aminophenoxy)-2,5-di-tert-butylbenzene, containing symmetric, bulky di-tert-butyl substituents and a flexible ether unit, was synthesized and used to prepare a series of polyamides by the direct polycondensation with various aromatic dicarboxylic acids in N-methyl-2-pyrrolidino