5-Dimethylamino-2- phenol

A A Dimethylamino)phenol. 3-Hydroxy-A7,A7-dimethylariiline (14) forms white needles and is soluble in alkaU, mineral acid, ethanol, diethyl ether, acetone, and benzene and practically insoluble in water. 

A A Dimethylamino)phenol. 4-Hydroxy-Ai,A/-dimethylaniline (20) forms large rhombic crystals from diethyl ether—hexane or diethyl ether—ligroin. It forms a salt with sulfuric acid, mp 208—210°C (187). 

Tris(chloromethyl)isocyanurate, 8 205 Tris(dimethylamino)phenol, 1 536... 

Dimethylamino)phenol, AN87 U-D i methy 1 am i nopheny1 i soth i o-cyanate, AP2U... 

TDPI was prepared by reacting 2-chloro-1,3,2-dioxaphosphorin-ane 2-oxide (I, X=C1) with m(N,N-dimethylamino) phenol followed by methyl iodide to produce pale yellow crystals. 1p and H nmr spectroscopy, tic and C,H,P,N analyses verified the structure and homogeneity of TDPI. UV-absorption spectroscopy indicates that free phenol (TMPH), if present, is less than 0.2%. 

Mieura [285] has described a method for the determination of traces of vanadium in non saline waters with 2(-8 quinolyl azo)-s(dimethylamino) phenol by reversed phase liquid chromatography spectrometry. 

In this reversed phase high performance liquid chromatographic method for neutral and cationic metal chelates with azo dyes, tetraalkylammonium salts are added to an aqueous organic mobile phase. The tetraalkylammonium in salts are dynamically coated on the reversed stationary support. As a result of the addition of tetraalkylammonium salts, the retention of the chelates is remarkably reduced. Tetrabutylammonium bromide permits rapid separation and sensitive spectrophotometric detection of the vanadium(V) chelate with 2-(8-quinolylazo)-5-(dimethylamino)-phenol, making it possible to determine trace vanadium(V). 

In general, the elastomer must be prereacted (adducted) with the epoxy for the toughening effect to take place. Adducts reduce the likelihood of early phase separation and maintain the solubility of the elastomer in the uncured resin system. For CTBN the reaction is carried out at high temperatures (150 to 160°C) and usually in the presence of a catalyst, such as tris-dimethylamino phenol or piperidine. The resulting epoxy-CTBN adducts are available from several suppliers, and they can be easily formulated into epoxy adhesives. 

C8H10O4 3-methoxy-5-methyl-4-oxo-2,5-hexadienoic acid 90-65-3 486.15 42.555 2 14129 C8H11NO 2-(dimethylamino)phenol 3743-22-4 472.65 41.263 1.2... 

Similarly, an intense blue-violet colour is generated when phosgene is exposed to 4- N,N-dimethylamino)benzaldehyde and the resulting aryldichloromethane is reacted with 3- N,N-dimethylamino)phenol [1928],... 

The examples discussed above refer to adduct ion formation, where covalent bonds are formed in the Cl plasma. However, with the increasing importance of alternative ionization techniques, such as thermospray (TSI) and, in particular, electrospray ionization (ESI), a wealth of non-covalent ion/molecule adduct ions can be generated and studied nowadays. One recent example concerns the formation of ion/solvent adducts, [M- -So]+, with M including 3-aminophenol, 3-(methylamino)phenol and 3-(dimethylamino)phenol, and several hydroxypyrimidines, among other aromatic molecules. The relative abundances of ions [M- -H]+, [M -h So -h H]+ and [M - - 2 So - - H]+ were studied as a function of the temperature and the pH, with the solvents being mixtures of methanol/water and acetonitrile/water which may contain ammonium acetate as an additive . Quite in contrast to this empirical study on proton-bound ion/molecule complexes, the non-covalent, open-shell adduct ions [l + -h NH3] were investigated with respect to their intrinsic reactivity. These adduct ions were generated from phenol and ammonia by laser ionization of a... 

DMAP = / -(A,A-dimethylamino)phenol TMPD = A,A,A A -tetramethylene-/ -phenylenediamine. Reference 380 contains data for several substituted tyrosines. 

In general, nitroso-compounds lead to more sensitive methods than oximes. Typical reagents are l-nitroso-2-naphthol (e = 2.2-10 at 700 nm) [97], 2-nitroso-5-dimethylamino-phenol (8 = 4.0-10 at 750 nm) [98,99], and isonitrosobenzoyl acetone [100]. 

Higher sensitivity is obtained in reactions of Nb with Sulphonitrophenol M (formula 33.1) (8 = 5.3-10 ) [55,62,63]. Other reagents recommended for Nb determination include Sulphonitrazo E [64], TAR [21,65], arsonophenylazochromotropic acid [66], an azo derivative of 8-hydroxyquinoline [67], and 2-(5-chloro-2-pyridylazo)-5-dimethylamino-phenol (MIBK) [68]. 

Phenanthrenamine 9-Phenanthrenamine Phenol, 2-(dimethylamino)-Phenol, 3-amino-... 

Dimethylamino)phenol 4-(Dimethylamino)phenol [4-(Dimethylamino)phenyl]phenylmethanone... 

A A Diethylamino)phenol. This derivative (16) forms rhombic bipyramidal crystals. Industrial synthesis is analogous to the previously described synthesis of 3-(iV,iV-dimethylamino)phenol from resorcinol and diethylamine, by reaction of 3-(iV,iV-diethylamino)benzenesulfonic acid with sodium hydroxide, or by alkylation of 3-aminophenol hydrochloride with ethanol. 

Methjiation of 4-aminophenol with a methyl halide under pressure produces 4-(lV,lV-dimethylamino)phenol. The competing product, 4-hydroxyphen5itrimethyl ammonium halide (or the corresponding base), also yields 4-(/V,/V-dimetby1amino)pbeno1 on distillation. Alternatively, it can be synthesized by dealkylation of 4-methoxy-A[,A/-dimethylaniline [701-56-4] with hydroiodic acid at reflux temperature for 10 h (188) or by the photodecomposition of 4-dimethylarninobenzene diazonium tetrafluoroborate [24564-52-1] (187). 

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