Dimethyl ethanol amine

N,N-Dimethyl-ethanol amine 7-100 The Pc is formed at any temperature. Intensity of the color of the solution increases with temperature. In absence of UV irradiation, the Pc is formed slowly starting from 45-50°C... 

In the case of the epoxy-acrylic graft copolymer, the epoxy is not soluble in the monomer mixture, even as low as a 10% solution. However, the epoxy resin being the majority component acts as the continuous phase. The purpose of the graft epoxy-styrene-methacrylic acid copolymer is to lower the barrier at the interface so that a stable oil-in-oil emulsion is first obtained and upon neutralization with a tertiary amine, dimethyl ethanol amine, a stable oil-in-oil emulsion in water is then obtained. 

IV. The fourth type includes polymerization in the presence of ionic macromolecular emulsifier. In this case, monomers such as styrene, methyl methacrylate, methacrylic acid, acrylonitrle, etc. were polymerized with the neutralized epoxy-g-(methacrylic acid-styrene) copolymer as emulsifier. The initiator used was a redox system composed of sodium formaldehyde sulfoxylate-tert. butyl hydroperoxide. The base used for neutralization was dimethyl ethanol amine. 

Dimethyl formamide C4 hydrocarbons Butadiene mono-ethanol amine aromatics... 

Trifluoroacetic acid, acetone, acetonitrile, acrylonitrile, aniline, benzaldehyde, m-cresol, cyclohexanone, N,N-dimethyl acetamide, N,N-dimethyl formamide, dimethyl sulfoxide, ethanol amine, formic acid, N-methyl-2-pyrolidone, nitrobenzene, propylene carbonate, pyridine, triethyl phosphate... 

When fed in place of choline it was observed that dimethylamino-ethanol prevented fatty liver but led to poor growth on a homocystine diet, whereas the monomethyl compound was quite toxic. The interpretation to be placed on this result is that the di- and monomethyl-aminoethanols can be converted to choline by being methylated, but cannot serve as methyl donors themselves. The conversion of ethanol-amine to choline by successive methylation steps has received support from a study of choline synthesis in cholineless mutants of Wewrospora. Monomethylaminoethanol was isolated from the culture media of one cholineless mutant, and it was found to support the growth of a second cholineless mutant. This is evidence that the monomethyl derivative is an intermediate in the synthesis of choline by Neurospora. Dimethyl-aminoethanol promotes the growth of both strains. 

Rigid PUR foam wastes were simultaneously aminolyzed with NH, ethylene diamine, diethylene triamine, hexamethylenediamine, or ethanolamine and alkoxylated by ethylene oxide, propylene oxide, butylene oxide, phenyl glycidyl ether, or styrene oxide optionally in the presence of a hydroxyl containing tert-amine (dimethyl ethanol... 

Reductions of aldehydes and ketones to alcohols proceed at slower rates with AERs in BH4 form than with NaBH4 in ethanol.a,j8-Unsaturated carbonyl compounds are reduced by BH4 in a gel AER to the allylic alcohols. Cyanoborohydride ion in a macroporous AER effects reductive aminations of ketones and ammonia to primary amines, reductive methylations of primary amines to the N,iV-dimethyl tertiary amines with aqueous formaldehyde, reductions of N-alkyl- and AT-acyl-pyridinium ions to tetrahydropyridines, and reductions of primary alkyl halides to alkanes. Nitroarenes are reduced to amines, the bromide of a-bromocarbonyl compounds is replaced by hydride, and 1,2-dibromoalkanes give alkenes by treatment with HFe(CO)4 in a macroporous AER. 

Phosphorus trichloride reacts readily with three equivalents of an alcohol e.g, ethanol, in the presence of a tertiary amine such as pyridine, dimethyl-aniline, or diethylaniline, to form triethyl phosphite and hydrogen chloride, the latter being immediately neutralised by the tertiary amine. 

We chose benzyli dene acetone (4.39, Scheme 4.11) as a model dienophile for our studies. The uncatalysed Diels-Alder reaction of this compound with cyclopentadiene is slow, justifying a catalytic approach. Reaction of 4.39 with paraformaldehyde and dimethyl amine under acidic conditions in an aqueous ethanol solution, following a literature procedure, produced the HCl salt of 4.42 (Scheme 4.11). The dienophile was liberated in situ by adding one equivalent of base. 

ATBN - amine terminated nitrile rubber X - Flory Huggins interaction parameter CPE - carboxylated polyethylene d - width at half height of the copolymer profile given by Kuhn statistical segment length DMAE - dimethyl amino ethanol r - interfacial tension reduction d - particle size reduction DSC - differential scanning calorimetry EMA - ethylene methyl acrylate copolymer ENR - epoxidized natural rubber EOR - ethylene olefin rubber EPDM - ethylene propylene diene monomer EPM - ethylene propylene monomer rubber EPR - ethylene propylene rubber EPR-g-SA - succinic anhydride grafted ethylene propylene rubber... 

Dimethyl-6-methylamino-5-quinoxalinamine (175) (prepared freshly as an ethanolic solution by catalytic hydrogenation of the corresponding nitro compound) and cyanogen bromide gave 3,4,8-trimethyl-3//-imidazo-[4,5-/]quinoxalin-2-amine (176) (20°C, 3.5 h 75%) the analogous... 

Note It is reported that the use of chlorobenzene as solvent is essential when the reagent is to be used to detect aromatic amines [1]. In the case of steroids, penicillins, diuretics and alkaloids the reaction should be accelerated and intensified by spraying afterwards with dimethylsulfoxide (DMSO) or dimethylformamide (DMF), indeed this step makes it possible to detect some substances when this would not otherwise be possible [5,9-11] this latter treatment can, like heating, cause color changes [5,9]. Penicillins and diuretics only exhibit weak reactions if not treated afterwards with DMF [10, 11]. Steroids alone also yield colored derivatives with DMSO [9]. Tlreatment afterwards with diluted sulfuric acid (c = 2 mol/L) also leads to an improvement in detection sensitivity in the case of a range of alkaloids. In the case of pyrrolizidine alkaloids it is possible to use o-chloranil as an alternative detection reagent however, in this case it is recommended that the plate be treated afterwards with a solution of 2 g 4-(dimethyl-amino)-benzaldehyde and 2 ml boron trifluoride etherate in 100 ml anhydrous ethanol because otherwise the colors initially produced with o-chloranil rapidly fade [12]. 

The reaction has been improved to a satisfactory process by modifying the reaction conditions. A remarkable effect of the addition of amines on the reaction was observed (49). For example, the reaction of butadiene (4 moles) and acetic acid (4 moles) in the presence of 2-(N,/V-dimethyl-amino)ethanol (4 moles) using Pd(acac)2 (3 mmoles) and PPh3 (3 mmoles) at 90°C gave complete conversion after 2 hours. The product was found to consist of 8-acetoxy-1,6-octadiene (47) (71%), 3-acetoxy-1,7-octadiene (48) (21%) and 1,3,7-octatriene (16) (8%). Various tertiary amines, such as triethylamine, )V-methylmorpholine, Af,Af,N, N -tetramethyl-1,3-bu-tanediamine, and triethylenediamine, showed the same favorable effect. Other basic salts, such as sodium and potassium acetate, accelerate the reaction, especially at high concentrations (50, 51). The selection of solvents is also important. Arakawa and Miyake found that electron-donating type solvents (e.g., THF and triethylamine) are good solvents... 

This method, although described for indoles, probably also worlds with 5-OH-tryptamine (serotonin), and 5-OH-DMT (bufotenin) with compounds of the latter type, orally active psilocybin analogs will be obtained in one step. Dissolve 5 g 5-OH-indole (or analog) in 25 ml ethanol. Add 5.5 g 33% aqueous dimethylamine (or other amine, e.g., piperidine) and add slowly dropwise with stirring 3.5 g 38% aqueous formaldehyde. Two minutes after the end of the addition shake with water and CHCI3 dry and evaporate in vacuum the CHClj phase to get 5 g oily 4-dimethyl-aminomethyl-5-OH-indole (1) (can chromatograph on 100 g alumina and elute with ethyl acetate). It has been claimed that this method does not work. 

Diethyl bis(methylthio)methylenemalonate was reacted with dimethyl-amine in ethanol in a sealed tube at 120°C for 24 hr to give dimethyl (methylthio)(dimethylamino)methylenemalonate (350) 27% yield [78-ACS(B)421]. 

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. 

Benzylalkohole, Diphenyl- und Triphenyl-methanol reagieren mit Phosphorsaure-tris-[di-methylamid] bei hohcn Temperaturen unter Bildung der entsprechenden N,N-Dimethyl-amine in mafiigen bis guten Ausbeuten1. Aus 1-Phenyl-ethanol jedoch entsteht unter den gleichen Bedingungen als Hauptprodukt Styrol. 

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