Adipoylation

PEROXIDES AND PEROXIDE COMPOUNDS - ORGANIC PEROXIDES] (Vol 18) Adipoyl chloride [111-50-2]... 

Polystyrene can be cross-linked by its acylation with bifunctional acylating agents such as adipoyl, sebacoyl, or malonyl chlorides ia the presence of AlCl iu CS2 solution at 0°C (106). 

Adipoyl moiety is first attached ia order to provide an appropriately spaced proximal carbonyl group. The esters are oxidized enzymatically and then deacylated. The procedure results ia the synthesis of diols (119) with excellent enantiomeric purity (ee 96—98%) ia 72—92% yield. 

When ACPC was condensed with hexamethylene diamine in the presence of two other acid chlorides (seb-acoyl or adipoyl chloride), poly(amide)s 6.6 and 6.10 with various numbers of azo groups per repeating unit (between 0.14 and 1.0, depending on the ratio of the acid chlorides used) could be obtained [35,36]. Thus, block copolymers with a controlled segment length of the poly-(amide) blocks were attainable. 

In a later work, Tunca and Yagci [40,41] used two other acid chlorides (adipoyl and terephthaloyl chloride) along with ACPC. By changing the ratio of the different acid chlorides the number of thermally labile azo bonds in the polymer backbone could be regulated. 

Example 15. PA from m-phenylenediamine and adipoyl chloride by solution polymerization.2 32 To a well-dried 250-mL three-necked straight-wall flange flask with nitrogen inlet/outlet, dropping funnel, and magnetic stirrer (Fig. 3.18b),... 

This reaction also takes place with halogenides of dibasic acids. Thus adipoyl chloride and diethyl phosphite are reacted at 90°C for 8 h yielding adipyl-diphosphonic acid diethyl ester, according to Eq. (41). 

C5Hj 02 140-88-5) see Acrivastine Azelastine Benperidol Benzquinamide Setiptiline Troglitazone ethyl adipoyl chloride... 

Nylon 66 can be drawn from a dish containing two starting materials. The bottom layer is an aqueous solution of 1,6-hexanediamine, and the top layer is adipoyl chloride (a more reactive derivative of adipic acid). Nylon 66 forms at the interface between the two liquids. 

How can you make a polyester and a polyamide Objectives Prepare a polyester from phthalic anhydride and ethylene glycol. Prepare a polyamide from adipoyl chloride and hexamethylenediamine. phthalic anhydride (2.0 g) sodium acetate (0.1 g) ethylene glycol (1 mL) 5% adipoyl chloride in cyclohexane (25 mL) 50% aqueous ethanol (10 mL) 5% aqueous solution of hexamethylenediamine (25 mL) 20% sodium hydroxide (NaOH) (1 mL) scissors copper wire test tube test-tube rack 10-mL graduated cylinder 50-mL graduated cylinder 150-mL beakers (2) ring stand clamp Bunsen burner striker or matches balance weighing papers (2)... 

Avoid skin contact with sodium hydroxide, phthalic anhydride, adipoyl chloride, or hexamethylenediamine. 

Using a clean 50-mL graduated cylinder, measure 25 mL of a solution of adipoyl chloride in cyclohexane and pour it into a 150-mL beaker. Record the volume used in Data Table 2. 

Carefully pour the adipoyl chloride solution down the inside wall of the beaker containing the hexamethylenediamine. This can best be done by tilting the beaker containing the hexamethylenediamine and pouring the adipoyl chloride solution down the inclined side. If this is done carefully, two layers will form. 

Conditions for the safe preparation of the diisocyanate from adipoyl chloride and sodium azide in acetonitrile-toluene mixtures were established. 

Figure 5. Analysis (21) according to Eq. 7 of gel-point data (22) from reactions of diacid chlorides (adipoyl and sebacoyl chlorides) and POP triols (LHT240, LHT112 (oxypropylated 1,2,6-hexane triols), and LG56 (oxypropylated glycerol)) in bulk and in diglyme solution at 60°C, with cext = cao...

Acridinyl (from acridine) Acroyloyl or propenoyl) Adipoyl or hexanedioyV) Alanyl /3-Alanyl... 

The adipoylated film was washed several times with anhydrous toluene and dioxane, followed by reaction with 7-hydroxycoumarin in dioxane containing sodium hydride for 2 hrs at room temperature. After coupling the coumarin, the film was extracted with methanol in a Soxhlet apparatus, rinsed with water, and dried under vacuum... 

The film reacted with adipoyl chloride followed by coupling with 7-hydroxycoumarin was subjected to methanolysis at 1 N HC1 and 60°C. The regenerated coumarin was assayed at pH 10 by fluorescence spectroscopy at an excitation wavelength of 329 nm and an emission wavelength of 455 nm. A Hitachi MPF-4 Fluorescence Spectrophotometer was used for all fluorescence measurements. 

After extraction, the urethanated films were subjected to alkaline hydrolysis of urethanes to liberate the corresponding amines, while the adipoylated films were hydrolyzed after having reacted with 7-hydroxycoumarin. Amounts of the released amines and coumarin were determined by fluorescence spectroscopy as described in the Experimental section. Since aniline as well as butylamine has no appreciable fluorescence by themselves, their fluorescence assay was made after reacting with o-phthalaldehyde in the presence of mercaptoethanol. In Figure 3, where relative fluorescence intensities are plotted as a function of concentrations of amines and hydroxycoumarin, one can see that the fluorescence intensities vary linearly with their concentration to permit us the quantitative determination of extremely small amounts of amines and hydroxycoumarin. 

In the following we will present some typical results of urethanation and adipoylation and, in addition, of contact angles of surface-modified films against water. 

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