1-Chloronaphthalene, oxidation

The chemical resistance of the linear polymers is also very good. Resistant to most acids, aqueous bases, hydrocarbons, most halogenated hydrocarbons, alcohols and phenols, they are attacked by concentrated sulphuric acid, formic acid, some amines, benzaldehyde, nitromethane and a few other reagents. They will dissolve in 1-chloronaphthalene at elevated temperatures but in general have excellent solvent resistance. The polymer is cross-linked by air oxidation at elevated temperatures. 

In /r-bridged dimers, two phthalocyanine moieties are linked by one or more bridging atoms such as oxygen or halogens. Niobium(V) oxide tribromide (NbOBr,) when treated with phthalonitrile in 1-chloronaphthalene at 230CC for 3 hours produces /r-bromo-/t-dioxobis[nio-bium(V) phthalocyanine] tribromide in 52%.232... 

Chemical/Physical. An aqueous solution containing chlorine dioxide in the dark for 3.5 d oxidized naphthalene to chloronaphthalene, 1,4-dichloronaphthalene, and methyl esters of phthalic acid (Taymaz et ah, 1979). In the presence of bromide ions and a chlorinating agent (sodium hypochlorite), major products identified at various reaction times and pHs include 1-bromonaphthalene, dibromonaphthalene, and 2-bromo-l,4-naphthoquinone. Minor products identified include chloronaphthalene, dibromonaphthalene, bromochloronaphthalene, bromo-naphthol, dibromonaphthol, 2-bromonaphthoquinone, dichloronaphthalene, and chlorodibromo-naphthalene (Lin et ah, 1984). 

Cr(CO)6 react with phthalonitrile in hot 1-chloronaphthalene to precipitate the ft form of CrnPc which is readily oxidized to CrI11(Pc)OH in air.197,198 The hydroxide coordinates other ligands to form six-coordinate complexes, Crni(Pc)(OH)X (X = ROH, H20, CN, SCN, SeCN). The hydroxy group is substituted by CN in cone. KCN solution and Cri PcXChOj - is formed. Acetic anhydride acetylates Cr(Pc)(OH)(OH2) in a stepwise fashion to Cr(Pc)(OAc)(OH2) and Cr(Pc)(OAc)(HOAc). 

Oxidation of dilithium phthalocyanine Li2Pc affords a mono-lithium Pc rr-radical, LiPc, in which one unpaired electron resided in HOMO aiu n-orbital [23-25], ESR spectrum in chloronaphthalene solution was reported by Simon et al. [26], LiPc... 

Phthalocyaninato(2-)] iron(II) is a dark blue, thermally stable solid that can be sublimed in vacuo at 300°. It is very soluble in pyridine, giving deep blue solutions of the bis(pyridine) adducts. It also forms an unstable purple hexaaniline adduct when dissolved in aniline. It is soluble in concentrated sulfuric add and dimethyl sulfoxide (slightly) but is insoluble in most other organic solvents. The iron(II) complex, unlike the corresponding iron(II) porphines, is relatively stable toward oxidation to the iron (III) state. The electronic spectrum shows the following absorption bands (1-chloronaphthalene solution) 595 (e = 16,000), 630 (e = 17,000), 658 (e = 63,000) (pyridine solution) 333 (e = 45,000), 415 (e = 15,000), 395 (e = 2000), 658 nm (e = 8000). 

Unknown Name txplosives. a) Ammonium Nitrate Explosive of Societe Suisse des Explosifs AN 70, PETN 10, TNT 10 NaNH HP0. 4H 0 10% [SwissP 228940 (1943) CA 42, 6538 (1938)] b)Plastic Explosives of O. Matter l)Mixt of coal tar distillates with inorganic oxidizers, such as nitrates, chlorates or perchlorates [SwissP 220755 (1942) CA 42, 6538(1948)] and 2)Mixt of a watei-insol hydrocarbon (such as chloronaphthalene) and resinous thickening agent (such as rosin or car dlstillation residue) with inorganic oxidizers (such as nitrates, chlorates or perchlorates) [SwissP 228653 (1943) CA 43,... 

Derivation By oxidizing dichloronaphthalene tetrachloride (see chloronaphthalene) with nitric acid. 

The oxidation of 2-chloronaphthalene to chloro-2-hydroxy-6-keto-hexa-2,4-dienoic acids (Figure 4.56) by cells in which biotransformation of the substrate was induced by growth with naphthalene (Morris and Barnsley 1982). 

CHLORONAPHTHALENE (91-58-7) C10H7CI Combustible liquid. Contact with strong oxidizers may cause fire or explosion. Violent reaction with powdered aluminum, liquid oxygen, potassium, sodium. Flow or agitation of substance may generate electrostatic charges due to low conductivity ... 

When a catalyst is essential, copper, its oxides, and salts are preferred, and these are almost always used in the ammonolysis of compounds wherein the halogen is attached to an aromatic nucleus not containing negative substituents (e.g., chlorobenzene, chlorobiphenyl (chloroxenene), and chloronaphthalene). In the treatment of alkylene, nitrophenyl, and anthraquinone halides, copper catalysts are not essential but may be used to accelerate the reaction. In the typical reactions of Class 1, presented... 

The pol5mier has a broad compatibiUty with chemicals and solvents, offering a better chemical resistance than stainless steel. No solvent for PPS is known below 200°C. Above this temperature, 1-chloronaphthalene is a suitable solvent. Molecular mass, characterization e.g., by size exclusion chromatography at moderate temperatures can be done only when derivatives are formed prior to analysis in order to enhance the solubility. The sulfide groups are oxidized, by a mixture of nitric acid and methanesulfonic acid resulting in a poly(p-phenylene sulfoxide) (PPSO) polymer. Actually, methanesulfonic acid is a solvent for PPSO. 

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