Phenoxys

Tiiiman N, Uiman A, Schiidkraut J S and Penner T L 1988 incorporation of phenoxy groups in seif-assembied monoiayers of trichiorosiiane derivatives—effects on fiim thickness, wettabiiity, and moiecuiar-orientation J. Am. Chem. Soc. 110 6136-44... 

Dinltro-benzoate Phenyl-ureldo Acid p-Toluene- sulphonate 2 4-Dlchloro-phenoxy-acetate a-Napbthyl-ureldo Acid Phthalyl Derivative... 

Imidazole can be A -allylated. The A -glycosylimidazole 299 is prepared by regiospecific amination at the anomeric center with retention of configuration. Phenoxy is a good leaving group in this reaction[181]. Heterocyclic amines such as the purine base 300 are easily allylatedfl 82]. 

Chloro-4-(triHuoromethyl)phenoxy)-3- methylthio 1 CI2. Ethyl methylthioacetate 2 4-[2-Chloro-4-(trifluoromethyl)phcnoxyl]aniline 3 Et,N 49, [16]... 

FLUORINECOMPOUNDS,ORGANIC - FLUORINATED AROMATIC COMPOUNDS] (Volll) (+)-N-Methyl-g-[4-(trifluoromethyl)phenoxy]ben-zenepropanamine hydrochloride [54910-89-3]... 

The phenoxy-herbicide, 2,4-D, has been successfully bioremediated in a soil contaminated with such a high level of the compound (710 ppm) that it... 

This type of adhesive is generally useful in the temperature range where the material is either leathery or mbbery, ie, between the glass-transition temperature and the melt temperature. Hot-melt adhesives are based on thermoplastic polymers that may be compounded or uncompounded ethylene—vinyl acetate copolymers, paraffin waxes, polypropylene, phenoxy resins, styrene—butadiene copolymers, ethylene—ethyl acrylate copolymers, and low, and low density polypropylene are used in the compounded state polyesters, polyamides, and polyurethanes are used in the mosdy uncompounded state. 

Brominated C rbon te Oligomers. There are two commercial brominated carbonate oligomer (BrCO) products. Both are prepared from tetrabromobisphenol A and phosgene. One has phenoxy end caps [28906-13-0] and the other trihromophenoxy [71342-77-3] end caps. These are used primarily in PBT and polycarbonate/acrylonittile—butadiene—styrene (PC/ABS) blends. 

BAS 111 l-Phenoxy-3-(lH-l,2,4-tria2ole-l-yl)-4-hydroxy-5,5-dimethylhexane [9003-11-6] (BAS 111) (46) is a triazole that has plant growth inhibiting properties. It exerts its influence by inhibiting the production of gibbereUic acid in plants this has been demonstrated in canola (31,37). 

The introduction of DNOC was followed by the appearance in the 1940s of the substituted phenoxy acids, and in 1951 of the substituted ureas. 

BAS lllOOW [80553-79-3] l-phenoxy-3-(lJT-l,2,4-tria2ol-l-yl)-4-hydtoxy-5,5 dimethyUiexane C16H23N302... 

Herbicides can be grouped according to common stmctural features. Sometimes the assignment is arbitrary when there are a multitude of functional groups, eg, acifluorfen which is a diphenyl ether (phenoxy compound) as well as a trifluoromethyl compound. 

Other compounds of this general class which have been found to have antiestrogenic properties include the cytochrome P-450 inhibitor, SKF 525A P02-33-0](Sl) (24) JV, JV-diethyl-2-[(4-phenylmethyl)phenoxy]ethanamine [98774-23-3] (DPPE)(58) (42) /-Butylphenoxyethyl diethylamine [57586-10-4] (BPEA)(59) (43) and cyclofenil [110042-18-7] (60, R = C H ) (24) analogues. 

Chemical Properties. Lignin is subject to oxidation, reduction, discoloration, hydrolysis, and other chemical and enzymatic reactions. Many ate briefly described elsewhere (51). Key to these reactions is the ability of the phenolic hydroxyl groups of lignin to participate in the formation of reactive intermediates, eg, phenoxy radical (4), quinonemethide (5), and phenoxy anion (6) ... 

The significance of phenoxy anions is well recognized in the isolation of kraft and other water-insoluble technical lignins by acid precipitation. The ioniza tion of phenoHc hydroxyl groups coupled with the reduction of molecular size renders native lignin soluble in the aqueous pulping solution, thus enabling its separation from the polysaccharide components of wood. 

The aromatic ring of a phenoxy anion is the site of electrophilic addition, eg, in methylolation with formaldehyde (qv). The phenoxy anion is highly reactive to many oxidants such as oxygen, hydrogen peroxide, ozone, and peroxyacetic acid. Many of the chemical modification reactions of lignin utilizing its aromatic and phenoHc nature have been reviewed elsewhere (53). 

The halogen displacement polymerization proceeds by a combination of the redistribution steps described for oxidative coupling polymerization and a sequence in which a phenoxide ion couples with a phenoxy radical (eq. 11) and then expels a bromide ion. The resultant phenoxy radical can couple with another phenoxide in a manner that is analogous to equation 11 or it can redistribute with other aryloxy radicals in a process analogous to equations 7 and 8. 

Polymer Blends. The miscibility of poly(ethylene oxide) with a number of other polymers has been studied, eg, with poly (methyl methacrylate) (18—23), poly(vinyl acetate) (24—27), polyvinylpyrroHdinone (28), nylon (29), poly(vinyl alcohol) (30), phenoxy resins (31), cellulose (32), cellulose ethers (33), poly(vinyl chloride) (34), poly(lactic acid) (35), poly(hydroxybutyrate) (36), poly(acryhc acid) (37), polypropylene (38), and polyethylene (39). 

Adhesives. High concentration (>10%) solutions of poly(ethylene oxide) exhibit wet tack properties that are used in several adhesive appHcations. The tackiness disappears when the polymer dries and this property can be successfully utilized in appHcations that require adhesion only in moist conditions. PEO is also known to form solution complexes with several phenoHc and phenoxy resins. Solution blends of PEO and phenoxy resins are known to exhibit synergistic effects, leading to high adhesion strength on aluminum surfaces. Adhesive formulations are available from the manufacturers. 

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