Hexamethylene imine

Experimental evidence, obtained in protonation (3,6), acylation (1,4), and alkylation (1,4,7-9) reactions, always indicates a concurrence between electrophilic attack on the nitrogen atom and the -carbon atom in the enamine. Concerning the nucleophilic reactivity of the j3-carbon atom in enamines, Opitz and Griesinger (10) observed, in a study of salt formation, the following series of reactivities of the amine and carbonyl components pyrrolidine and hexamethylene imine s> piperidine > morpholine > cthyl-butylamine cyclopentanone s> cycloheptanone cyclooctanone > cyclohexanone monosubstituted acetaldehyde > disubstituted acetaldehyde. 

Methyl-isoxazole-(3)-carboxylic acid chloride 4-(/3-Aminoethyl)benzene sulfonamide hydrochloride Chloroformic acid methyl ester N-Amlno-hexamethylene imine... 

From the sulfonyl-urethane described above and N-amino-hexamethylene-imine, there is obtained, in a yield of 70%, the compound 4-[[4-[)3-[5-methyl-isoxazolyl-(3)-carboxamido]-ethyl]-benzene-sulfonyl] ]-1,1-hexamethylene-semicarbazide in the form of colorless crystals of MP 189°C. 

Metabolism of NHEX- C in the rat results in dose dependent formation of C02> with 45% exhaled after a dose of 8 mg/kg NHEX but only 4% after 576 mg/kg (17). Similar results were obtained for NPYR and nitrosoheptamethyleneimine. At doses of 8-12 mg/kg NHEX, 33-37% of the radioactivity was excreted in the urine (17, 52). Urinary metabolites of NHEX were e-caprolactam, e-amino-caproic acid, and 6-aminocaprohydroxamic acid (52). The formation of 6-caprolactam is analogous to results with NPYR and NNN, in which 2-pyrrolidinone and norcotinine were observed as urinary metabolites. Caprolactam did not originate from hexamethylene-imine, a product of denitrosation. 

Hexafluoro propoxy 2.5 dichloro benzene lufenuron Hexamethylene imine molinate... 

HEXAMETHYLENE IMINE (DOT) see HDGOOO HEXAMETHYLENETETRAAMINE see HEI500 HEXAMETHYLENETETRAMINE see HEI500 HEXAMETHYLENETRIPEROXYDIAMINE see DCK700... 

In a second step, the esters are hydrogenolysed to 1,6-hexanediol, which is then purified. A third step consists in aminating the diol at 208°C and 23.106 Pa absolute by means of ammonia, and in the presence of Raney nickel as catalyst Hexamethylene-diamine is obtained with a molar yield approaching 90 per cent, and the main by-products are hexamethylene imine and 6-aminohexanoL... 

Tetrathiomolybdate has been prepared with a number of organic cations including NEtJ, NC4H9 (pyrrolidinium), N2C4Hii (piperazinium), NCsH (piperidinium) and N4C6H13 (monoprotonated hexamethylene imine). These salts are useful for structural... 

A direction in designing inhibited polymer coatings using new principles has been proposed in [47]. A layer of corrosion inhibitor (p-hexamethylene imine nitrobenzoate) applied onto a steel substrate is polymerized in a low-temperature plasma. The high protecting properties achieved by this coating... 

Fig. 3.18. A scheme of plasma-induced modification of the coating based on p-nitrobenzoate of hexamethylene imine on a steei substrate [47] (lA) adsorption layer non-flushed by water (2A) outer flushed layer (IM) modified non-flushed layer (2M) plasma-polymerized layer, a - area of elevated density. The arrows show sewing of the modified layer to the substrate...

Hexamethylene-imine (HMI), Triethanolamine (TEOA), Na Pyrrolidine, Na 0.7 Na2O 20 TEOA 4 HMI B203 12 SiO2 80 H201 MCM-22 (MWW) Na3HMl7B6Si660i44... 

Of the amines, esters of /3-aminocrotonic and p-aminobenzoic acids, p-aminobenzenesulfamide [63, 266], hexamethylenetetramine [267], and certain others have been used for the stabilization of polyvinyl chloride. Phenyl-/ -naphthylamine, ethylphenylethanolamine [269], dicyanallqtl-amines [270], caprolactam [271], and N-(p-aminophenyl)hexamethylene-imine [268] have been recommended in the patent literature for the stabilization of polyvinyl chloride and vinyl chloride copolymers,... 

Compounds of this type inhibit corrosion by making the environment alkaline. In a closed vapor space, such as a shipping container, volatile solids such as the nitrite, carbonate, and benzonate salts of dicyclohexylamine, cyclohexylamine, and hexamethylene-imine are used. The mechanism of inhibition by these compounds is not entirely clear, but it appears certain that the organic portion of the molecules merely provides volatility. 

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