Propyl-amine

The amines are a group of compounds with the general formula R-NHj, and all the common amines are hazardous. As a class the amines pose more than one hazard, being flammable, toxic, and, in some cases, corrosive. The amines are an analogous series of compounds and follow the naming pattern of the alkyl halides and the alcohols that is, the simplest amine is methyl amine, with the molecular formula of CH NHj. Methyl amine is a colorless gas with an ammonia-like odor and an ignition temperature of 806°F. It is a tissue irritant and toxic, and it is used as an intermediate in the manufacture of many chemicals. Ethyl amine is next in the series, followed by propyl amine, isopropyl amine, butyl amine and its isomers, and so on. 

One mol of o-bromopropio-ortho-toluidide is mixed with a solution of 3 mols of n-propyl-amine in 500 ml of water-free benzene and the reaction mixture is heated in an autoclave to OO C for 8 hours. After cooling the reaction mixture is treated as described above. The base is obtained as a colorless oil. BP 159°-162 C/0.1 mm. Yield 55%. The base is then converted to the hydrochloride by reaction with HCl. 

Inward Rectifier K+ Channels. Figure 6 Spermine (Amino-propyl-amino-butyl-amino-propyl amine) is a long linear naturally occurring polyamine containing four nearly equally spaced positively charged (at normal pH) amines. Although 16 A long, the molecule is only about 3 A wide, similar to a dehydrated potassium ion. 

To ensure a homogeneous reducing medium, the tri-n-propyl-amine trichlorosilane ratio should be about 1 2. 

Athyl-benzyl-amin — Athyl-(2-phenyl-dthyl)-amin —> Athyl-(2,2-diphenyl-dthyl)-amin — Athyl-(2,2-dimelhyl-propyl)-amin-Hydrochlorid... 

Dimethylamin + Nonansaure Diathylamin + Octansaure Bis-[2-methyl- + Essigsaure propyl]-amin... 

NDMMOR Syrian golden hamster 100 N.R. N.R. N-nitroso(2-hydroxypropyl-2-oxopropyl)amine (2, 24) N-nitroso-bis(2-hydroxy-propyl )amine (2, 24) 68... 

In 1976, Ross al. first reported that the powerful carcinogens, N-nitrosodimethylamine (NOMA) and N-nitrosodi-n-propyl-amine (NDPA) were found at parts per million (ppm) concentrations in certain commercial herbicide formulations (1., ). Since then, scientists have learned that carcinogenic N-nitroso compounds can be formed in a wide variety of media of interest to those who manufacture, use, or study pesticide products. Some of these nitrosation-supporting media are listed in Table I. 

METHYL ETHYL SULPHIDE N-PROPYL AMINE ISOPROPYL AMINE TRIMETHYL AMINE MALEIC ANHYDRIDE VINYL ACETYLENE... 

Polyamides can also be prepared by the reaction of polyamines with azolides, as shown by the following reaction of nucleosil—300 (7 NH2), a spherical silica derivatized with propyl amine, with lecithin imidazolide 1623... 

For the tertiary amines, the desired exchange values are available from experiment only for R = R1 = R2 = Me and R = R1 = R2 = Et. The gaseous enthalpy of formation for the hydrocarbon corresponding to tri-n-propyl amine has not been measured, but it may be reliably estimated17 as —251.0 kJmol-1. A derived 8(,(tert/n-Pr, n-Pr, n-Pr) is ca —90 kJmol-1. Because Ss(tert/Et, Et, Et) = —97 kJmol-1, it is apparent that the exchange quantities for tertiary amines are not constant, as was surmised from the slopes reported in Table 1. Most of the derivations involving tertiary amines in later sections are based on an ethyl or propyl substructure and so an intermediate value of —93 kJmol-1 is recommended. 

FDMR has also been used to detect the transient radical cations formed from secondary amines by pulse radiolysis. As mentioned earlier this technique has been used to study a variety of systems such as the radical cation of triethylamine. The radical cations of diethylamine, n-propyl amine and f-butylamine, have also been studied25. The results have shown that the FDMR signal is enhanced with increasing alkyl substitution of the amine as in the pyrrolidines (18) and the piperidines (19)25. 

There are numerous iron(II) pentacoordinate complexes. An example is constituted by [Fe(saldpt)], the N302 coordinated iron(II) complex of the Schiff base bis(salicyldeneaminate-3-propyl)amine, Scheme 9. 

As for iron, cobalt forms pentacoordinate complexes of N3O2 coordination with the already mentioned bis(salicyldeneamine-3-propyl) amine affording the series [Co(R-X-saldpt)], Scheme 12. 

Let us now examine the pentacoordinate Ni(II) complexes with the already cited Schiff base bis(salicylideneimmine-3-propyl)amine, [Ni(R-X-saldpt)]. As for the cases of iron(II) and cobalt(II) complexes, this ligand constrains the central nickel(II) ion to assume a trigonal bipyramidal geometry, Figure 105.156... 

Amongst metal complexes able to reversibly bind molecular dioxygen one should recall the previously mentioned trigonal-bipyramidal Co(II) complexes with bis(salicylideneimine-3-propyl)amine, [Co(R-X-saldpt)] (Chapter 5, Section 5), Scheme 3. 

As an example of the application of this method we can consider the cobalt complexes of bis(salicyldeneamine-3-propyl)amine,... 

It was also reported by PruP et al. [31] that in situ formed cobalt(III) complexes of pyridine-4-ylmethyl-propyl-amine (PYPA) on preformed organomodified HMS are active as catalysts in the aerobic oxidation of styrene and also 1-decene (Figure 3). Incorporation of PYPA may be achieved by following several routes viz. sol-gel synthesis, post modification of sol-gel AMP-HMS, and grafting. The authors proposed that all materials are able to act as... 

Als Base dient hierbei ein doppelter OberschuB an Amin. Die Produkte (z.B. Bis-[l,l-diethyl-propinyl]-amitv, 48%) konnen, je nach Bedingungen, zu sterisch stark gehinderten primaren Aminen (z. B. H2/Pt02/Ethanol, 300 kPa 3-Amino-3-ethy -pentan 90%), sekundaren Aminen (z.B. H2/Raney-Ni/Ethanol, 420kPa Bis-[1, l-diethyl-propyl]-amin 72%) Oder cyclischen Aminen (z.B. Hj/Pd-C/Ethanol, Normaldruck, 0° 2,2,5,5-Tetra-ethyl-3,4-dimethyl-2,5-dihydro-pyrrol, 48% neben 2,2,5,5-Tetraethy -4-methyl-3-methylen-pyrrolidin 15%) hydriert werden. 

Benzyl-methyl-amin Methyl-( 1-methyl-propyl )-amin... 

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