Aminoisophthalic acid

Aminoisobutanol, a216 2-Aminoisobutyric acid, a217 5-Aminoisophthalic acid, a 14... 

More elaborate chemoselective polycondensations have been reported since 2000. Ueda and coworkers tried direct polycondensation of 5-hydroxy or 5-aminoisophthalic acid and an aromatic diamine bearing a phenol moiety in the presence of DBOP (Scheme 24) [98]. The model reactions were first carried out to find the conditions for chemoselective polycondensation. The reaction of 5-hydroxyisophthalic acid with p-toluidinc in the presence of DBOP and triethylamine afforded the corresponding amide in a way similar to ordinary amidations with DBOP. On the other hand, the reaction of 5-aminoisophthalic acid with p-toluidine was dependent on the base used. When triethylamine, DBN, and DBU were used, a mixture of the desired... 

LAG of an equimolar mixture of 2-hydroxy-1-naphthaldehyde and 5-aminoisophthalic acid in Retsch MM200 grinder mill afforded imine product, 5-[(2-oxo-2H-naphthalen-l-ylidenemethyl)-amino]-bezene-l,3-dicarboxylic acid (Scheme 3.11). Kaimer et al. noted the dependence of the solvent used for LAG on the reaction time needed for full conversion milling with methanol, pyridine, and DMF took 50, 40, and 20min, respectively [11]. Solution-phase synthesis in methanol at room temperature was complete in 30 min. PXRD and X-ray diffraction analysis revealed that variation of solvents used for LAG led to imine product (methanol), or its solvates (pyridine and DMF). 

Sassi et al. synthesized hb copolyamides by melt polycondensation of mixtures of AB, AB2, and B3 monomers.Hb polyamides with carboxylic acid end groups were obtained by copolymerization of trimesic acid (B3), s-caprolactam (AB), and 5-aminoisophthalic acid (AB2). Copolymerization of tris (aminoethyl) amine (B3), s-caprolactam (AB), and... 

Huseby, R. M., Lawson, D. E., Pochron, S. P., and Schuanes, J. A. Assay for Plasma Heparin Using a Synthetic Peptide Substrate for Thrombin Introduction of the Fluoro-phore Aminoisophthalic Acid Dimethyl Ester... 

Fig. 19. Appearance of 5-generations dendrimer obtained from the monomer S>aminoisophthalic acid by computer simulation. In each generation monomers were allowed to react only with the previous generation of the growing dendrimer. The polymeric material occupies about 75% of the dendrimer s volume of gyration...

A-PBI = amino pendent PBI (PBI synthesized from 3,3 -diaminobenzidine, 5-aminoisophthalic acid, and IPA) Epx = ethylene glycol diglycidyl ether cross-linker... 

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