Alkylated diamines, structures

Intercalation of a, oo-alkyl diamines (C2-C10) follows the moving boundary model, and a number of intermediate phases appear before the intercalation is complete (74). In the final phase, the diamines form a bilayer, with the chains fully extended at an angle of 58° to the a-ZrP layer. The transformation from a layered structure to a framework structure allows for the binding of short-chain... 

A variety of alkyl amines B, including 1-propylamine, ethylene diamine, 1,3-diaminopropane, and (7 )-l-amino-2-propanol have been used as reactants. The guest exchange kinetic results are reported in Table 13. The presence of more than one reacting [/3-CD-H-A] structure is observed with A = DOPA and penicillamine. The results have been rationalized in terms of specific interactions in the relevant inclusion complexes which determine their structure and relative stability. 

Sulfur Bake. The yellow, orange, and brown sulfur dyes belong to this group. The dyes are usually made from aromatic amines, diamines, and their acyl and nuclear alkyl derivatives. These may be used in admixture with nitroanilines and nitrophenols or aminophenols to give the desired shade. The color formed is said to be the result of the formation of the thiazole chromophore, evident in dye structure (1). 

In addition to the mono- and dialkylamines, representative structures of this class of surfactants include AJ-alkyltrimethylene diamine, RNHfCH NH j where the alkyl group is derived from coconut, tallow, and soybean oils or is 9-octadecenyl, 2-alkyl-2-imidazoline (3), where R is heptadecyl, heptadecenyl, or mixed alkyl, and l-(2-aminoethyl)-2-alkyl-2-imidazoline (4), where R is heptadecyl, 8-heptadecenyl, or mixed alkyl. 

By using glycine diphenylmethyl (Dpm) amide-derived Schiff base 22 as a key substrate and N-spiro chiral quaternary ammonium bromide lg as an ideal catalyst, a high enantioselectivity was achieved, even in the alkylation with less-reactive simple secondary alkyl halides, as shown in Table 5.5 [21]. This system offers a facile access to structurally diverse optically active vicinal diamines in combination with the subsequent reduction (Scheme 5.14) [21]. 

Amino and functional aromatic phosphates, phosphonates, and phosphine oxides have also been used as reactive components to impart flame retardancy to cured epoxy resins. Phosphine oxides are particularly hydrolytically stable and several studies have been reported, for example, of the curing of epoxy resins with bis(aminophenyl) alkyl and aryl phosphine oxides65-67 (Structure 5.19). The relative performances of epoxies cured with aromatic diamine hardeners containing phosphine oxide, phosphinate, phosphonate, or phosphate units have recently been assessed.68 Aromatic phosphine oxides have been functionalized also with maleimide and hydroxyl groups for use as epoxy resin hardeners.69,70... 

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