On the basis of analytical and experimental data, the Schiff bases were coordinated to Cu(II) ion with four donor atoms, two imine
nitrogens and two deprotonated alkoxy-oxygen atoms.
This indicates that the fillers can facilitate the cure reactions to occur at earlier temperature, due to the catalytic action of hydroxyl and free amino groups of chitosan moiety as well as the imine
groups of PANI grafted chains.
The synthetic strategy for the synthesis of imines
8a-g has been described in the Scheme 3, involves reaction of acid hydrazide 1 with thiosemicarbazide to give first on a product it is 1-((5-amino-1,3,4-thiadiazol-2-yl)methyl)-3H-benzo[f]chromen-3-one 7, which is considered as starting material for the synthesis of imines
8a-f and 8g by its reaction with substituted aldehydes or isatin as shown in Scheme 3.
Quinoline containing azomethine imine
3 possesses low-intensity fluorescence at 411 nm, while 8-hydroxyquinoline derivative 4 demonstrates more intense emission with a larger Stokes shift at 514 nm ([phi] = (03) (Table 1).
Metal complexes of imine
bases derived from substituted aldehydes and heterocyclic compounds containing nitrogen, sulfur, and/or oxygen as ligand atoms are of interest as simple structural models of more complicated biological systems .
The formation of imines
as by-products of the benzoxazine polymerization process has been hypothesized by several authors [31, 32].
L-Cys reacts with acetaldehyde to generate imine
(Figure 6), which is harmless to the human body and can be directly excreted, making L-Cys protective to organisms [20, 25].
Cross-linked polyethylene imine
(PEI) is a template to preparing nHA/PEI in composite materials.
In this section, we discuss entropies of four familiar classes of dendrimers, namely, Porphyrin (Figure 1), Propyl ether imine
(Figure 2), Zinc-Porphyrin (Figure 3), and Poly(EThyleneAmidoAmine) (Figure 4) Dendrimers.
For example; bioactivation of acetaminophen by CYP2E1 leads to the formation of the toxic metabolite N-acetyl-p-benzoquinone imine