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phenyl

phenyl

phenyl Sentence Examples

  • Anisol, phenyl methyl ether, C 6 H 5.

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  • It is a colourless pleasant-smelling liquid which boils at 154.3° C. Phenetol, phenyl ethyl ether, C 6 H 5.

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  • Phenyl acetate, C 6 H 5.

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  • Phenyl benzoate, C 6 H 5.

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  • Phenylpropiolic acid, C 6 H 5 C:C CO 2 H, formed by the action of alcoholic potash on cinnamic acid dibromide, C 6 H 5 CHBr CHBr CO 2 H, crystallizes in long needles or prisms which melt at 136-137° C. When heated with water to 120° C. it yields phenyl acetylene CsH b C; CH.

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  • a-pyrone condenses with the benzene ring to form coumarin and isocoumarin; benzo-'y-pyrone constitutes the nucleus of several vegetable colouring matters (chrysin, fisetin, quercetin, &c., which are derivatives of flavone or phenyl benzo-y-pyrone); dibenzo--ypyrone is known as xanthone; related to this substance are fluorane (and fluorescein), fluorone, fluorime, pyronine, &c. The pyridine ring condenses with the benzene ring to form quinoline and isoquinoline; acridine and phenanthridine are dibenzo-pyridines; naphthalene gives rise to a-and /3-naphthoquinolines and the anthrapyridines; anthracene gives anthraquinoline; while two pyridine nuclei connected by an intermediate benzene nucleus give the phenanthrolines.

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  • The acid may also be obtained by passing carbon monoxide over a mixture of sodium phenolate and sodium carbonate at 200°C.: Na2C03+ C 6 H 2 ONa+CO = C 7 H 4 O 2 Na 2 -{- HC02Na;and by heating sodium phenolate with ethyl phenyl carbonate to 200° C.: [[Cghso.

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  • Phenyl salicylate, C6H4(OH) C 02C6H5, or salol, is obtained by heating salicylic acid, phenol and phosphorus oxychloride to 120-125° C.; by heating salicylic acid to 2 =0° C.; or by heating salicyl metaphosphoric acid and phenol to 140-150° C. (German Patent 85,565).

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  • His earlier work included an investigation of succinic acid, and the preparation of phenyl cyanide (benzonitrile), the simplest nitrile of the aromatic series; but later his time was mainly occupied with questions of technology and public health rather than with pure chemistry.

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  • Thus, with the tolylphenylketoximes, one yields the anilide of toluic acid and the other the toluidide of benzoic acid, the former necessitating the presence of the phenyl and hydroxyl radicals in the syn position and the latter the tolyl and hydroxyl radicals in the syn position, thus: CH3 C6H4 C C6H5

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  • Nh]]�CH2�CH2�CH2, hydroxyproline, phenyl alanine or phenyl-a-aminopropionic acid, C 6 H 5 � CH 2 � CH(NH 2) � Cooh, tyrosine or p-hydroxyphenyl-aaminopropionic acid, phenyl ethylamine, p-hydroxyphenyl ethylamine, tryptophane or indol aminopropionic acid, A.

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  • The aldehyde group also reacts with phenyl hydrazine to form two phenylhydrazones; under certain conditions a hydroxyl group adjacent to the aldehyde group is oxidized and glucosazone is produced; this glucosazone is decomposed by hydrochloric acid into phenyl hydrazine and the keto-aldehyde glucosone.

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  • It is probably a hydroxy-compound, since it gives a red-brown colour with ferric chloride, reacts with phenyl isocyanate and with phosphorus pentachloride, and with benzoyl chloride yields dibenzhydroxamic acid, C 6 H 5 CO NH O.

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  • In a similar manner, formic acid and dicyanophenylhydrazine yields a phenyl-triazole carboxylic acid, in which the phenyl group may be nitrated, the nitro group reduced to the amino group, and the product oxidized to a triazole carboxylic acid, which, by elimination of carbon dioxide, yields the free triazole: HO 2 C C=N H02C C =N, NPh-> N :CH N :CH They also result when the acidylthiosemicarbazides are strongly heated, the mercapto-triazoles so formed being converted into triazoles on oxidation with hydrogen peroxide (M.

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  • Silicobenzoic acid, C 6 H 5 S10.0H, results from the action of dilute aqueous ammonia on phenyl silicon chloride (obtained from mercury diphenyl and silicon tetrachloride).

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  • Methyl and phenyl anthracenes are known; phenyl anthranol (phthalidin) being somewhat closely related to the phenolphthaleins.

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  • At a temperature of about 300-400° C. the alkyl chloride formed in this reaction attacks the benzene nucleus and replaces hydrogen by an alkyl group or groups, forming primary amines homologous with the original amine; thus methylaniline hydrochloride is converted into paraand ortho-toluidine hydrochloride, and trimethyl phenyl ammonium iodide is converted into mesidine hydriodide.

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  • It can be prepared by the reduction of phenyl propiolic acid with zinc and acetic acid, by heating benzal malonic acid, by the condensation of ethyl acetate with benzaldehyde in the presence of sodium ethylate or by the so-called "Perkin reaction"; the latter being the method commonly employed.

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  • Cinnamic acid crystallizes in needles or prisms, melting at 133° C.; on reduction it gives phenyl propionic acid, C 6 H 5 CH 2 CH 2 000H.

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  • ANTIPYRINE (phenyldimethyl pyrazolone) (C11H12N20), is prepared by the condensation of phenylhydrazine with acetoacetic ester, the resulting phenyl methyl pyrazolone being heated with methyl iodide and methyl alcohol to loo-110° C.: CH 0=N CH3 C-N CH3 >N C6H5 - II >N C6H6 CH 2 -CO HC-CO Phenyl methyl pyrazolone Antipyrine On the large scale phenylhydrazine is dissolved in dilute sulphuric acid, the solution warmed to about 40° C. and the aceto-acetic ester added.

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  • When the reaction is complete the acid is neutralized with soda, and the phenyl methyl pyrazolone extracted with ether and distilled in vacuo.

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  • Witt (Ber., 1877, 10, p. 656), is obtained by coupling phenyl diazonium chloride with meta-phenylene diamine.

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  • The benzyl group shows this remarkably well, since we see that phenyl is present, as is also methyl.

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  • We should expect to find supersolubility curves lying below the solubility curves, and this result has been realized experimentally for the supersolubility curves of mixtures of salol (phenyl salicylate) and betol (/3-naphthol salicylate) represented by the dotted lines of fig.

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  • Chloroform may be readily detected by the production of an isonitrile when it is heated with alcoholic potash and a primary amine; thus with aniline, phenyl isocyanide (recognized by its nauseating smell) is produced, CHC13+C6H5NH2+3KHO=C6H5NC+3KC1+3H20.

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  • Those in which the keto groups are in combination with phenyl residues give pyridine derivatives on treatment with hydroxylamine, thus benzamarone, C 6 H 5 CH[CH(C 6 H 5) CO.

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  • a-Naphthol may be prepared by fusing sodium-a-naphthalene sulphonate with caustic soda; by heating a-naphthylamine sulphate with water to 200° C. (English Patent 14301 (1892)); and by heating phenyl isocrotonic acid (R.

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  • Phenyl nitramine, C 6 H S NH N02, is a colourless crystalline solid, which melts at 46° C. Sodium amalgam in alkaline solution reduces it to phenylhydrazine.

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  • Pinner, Ber., 1893, 26, p. 2125); and with trimethylene bromide to form a phenyl tetrahydropyrimidine (Pinner).

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  • Phenyl tetrahydropyrimidine.

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  • For diethyl ether see Ether, and for methyl phenyl ether (anisole) and ethyl phenyl ether (phenetole) see Carbolic Acid.

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  • It exists in two crystalline forms. Nitric acid passed into its chloroform solution gives phenyl diazonium nitrate.

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  • It may be synthetically obtained by distilling oxindole (C 8 H 8 NO) with zinc dust; by heating orthonitrocinnamic acid with potash and iron filings; by the reduction of indigo blue; by the action of sodium ethylate on orthoaminochlorstyrene; by boiling aniline with dichloracetaldehyde; by the dry distillation of ortho-tolyloxamic acid; by heating aniline with dichioracetal; by distilling a mixture of calcium formate and calcium anilidoacetate; and by heating pyruvic acid phenyl hydrazone with anhydrous zinc chloride.

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  • Magnesium phenyl bromide gives triphenyl vinyl alcohol.

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  • It forms a hydrazone with phenyl hydrazine, and an oxime with hydroxylamine.

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  • The truxillic acids, C,8H1504, which result by the hydrolytic splitting of truxilline, C38H46N208, are phenyl derivatives of cyclo-butane.

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  • For phenyl derivatives of the cyclo- pentane group see F.

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  • Fittig and Erdmann's observation that phenyl isocrotonic acid readily yielded a-naphthol by loss of water was of much importance, since it afforded valuable evidence as to the constitution of naphthalene.

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  • Aniline combines directly with alkyl iodides to form secondary and tertiary amines; boiled with carbon disulphide it gives sulphocarbanilide (diphenyl thio-urea), CS(NHC 6 H 5) 2, which may be decomposed into phenyl mustard-oil, C 6 H 5 CNS, and triphenyl guanidine, C 6 H 5 N: C(NHC6H5)2.

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  • DIPHENYL (phenyl benzene), CGH5.C6H5, a hydrocarbon found in that fraction of the coal-tar distillate boiling between 240-300° C., from which it may be obtained by warming with sulphuric acid, separating the acid layer and strongly cooling the undissolved oil.

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  • phenyl rings [7] .

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  • phenyl group, C 6 H 5, by removing a hydrogen from a benzene ring, C 6 H 6.

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  • phenyl ethanoate is formed together with hydrogen chloride gas.

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  • phenyl ethylamine, a mood enhancer, so a substitute sometimes just doesn't do the trick.

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  • Anisol, phenyl methyl ether, C 6 H 5.

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  • Pechmann, Ber., 18 9 5, 28, p. 857); by distilling anisic acid (paramethoxy benzoic acid) with baryta or by boiling phenyl diazonium chloride with methyl alcohol.

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  • It is a colourless pleasant-smelling liquid which boils at 154.3° C. Phenetol, phenyl ethyl ether, C 6 H 5.

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  • Phenyl acetate, C 6 H 5.

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  • Phenyl benzoate, C 6 H 5.

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  • Phenylpropiolic acid, C 6 H 5 C:C CO 2 H, formed by the action of alcoholic potash on cinnamic acid dibromide, C 6 H 5 CHBr CHBr CO 2 H, crystallizes in long needles or prisms which melt at 136-137° C. When heated with water to 120° C. it yields phenyl acetylene CsH b C; CH.

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  • Thus with hydroxylamine aldehydes yield aldoximes, R CH: N OH, and ketones, ketoximes, R 2 C: N OH (see Oximes), while phenyl hydrazine gives phenylhydrazones, R 2 C:N NH C 6 H 5 (see Hydrazones).

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  • a-pyrone condenses with the benzene ring to form coumarin and isocoumarin; benzo-'y-pyrone constitutes the nucleus of several vegetable colouring matters (chrysin, fisetin, quercetin, &c., which are derivatives of flavone or phenyl benzo-y-pyrone); dibenzo--ypyrone is known as xanthone; related to this substance are fluorane (and fluorescein), fluorone, fluorime, pyronine, &c. The pyridine ring condenses with the benzene ring to form quinoline and isoquinoline; acridine and phenanthridine are dibenzo-pyridines; naphthalene gives rise to a-and /3-naphthoquinolines and the anthrapyridines; anthracene gives anthraquinoline; while two pyridine nuclei connected by an intermediate benzene nucleus give the phenanthrolines.

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  • Chem., 1885 (2), 31, p. 407) modified the process by saturating sodium phenolate at 130° C. with carbon dioxide, in an autoclave, sodium phenyl carbonate C6HSO.

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  • The acid may also be obtained by passing carbon monoxide over a mixture of sodium phenolate and sodium carbonate at 200°C.: Na2C03+ C 6 H 2 ONa+CO = C 7 H 4 O 2 Na 2 -{- HC02Na;and by heating sodium phenolate with ethyl phenyl carbonate to 200° C.: [[Cghso.

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  • Phenyl salicylate, C6H4(OH) C 02C6H5, or salol, is obtained by heating salicylic acid, phenol and phosphorus oxychloride to 120-125° C.; by heating salicylic acid to 2 =0° C.; or by heating salicyl metaphosphoric acid and phenol to 140-150° C. (German Patent 85,565).

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  • His earlier work included an investigation of succinic acid, and the preparation of phenyl cyanide (benzonitrile), the simplest nitrile of the aromatic series; but later his time was mainly occupied with questions of technology and public health rather than with pure chemistry.

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  • Thus, with the tolylphenylketoximes, one yields the anilide of toluic acid and the other the toluidide of benzoic acid, the former necessitating the presence of the phenyl and hydroxyl radicals in the syn position and the latter the tolyl and hydroxyl radicals in the syn position, thus: CH3 C6H4 C C6H5

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  • Nh]]�CH2�CH2�CH2, hydroxyproline, phenyl alanine or phenyl-a-aminopropionic acid, C 6 H 5 � CH 2 � CH(NH 2) � Cooh, tyrosine or p-hydroxyphenyl-aaminopropionic acid, phenyl ethylamine, p-hydroxyphenyl ethylamine, tryptophane or indol aminopropionic acid, A.

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  • The aldehyde group also reacts with phenyl hydrazine to form two phenylhydrazones; under certain conditions a hydroxyl group adjacent to the aldehyde group is oxidized and glucosazone is produced; this glucosazone is decomposed by hydrochloric acid into phenyl hydrazine and the keto-aldehyde glucosone.

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  • It is probably a hydroxy-compound, since it gives a red-brown colour with ferric chloride, reacts with phenyl isocyanate and with phosphorus pentachloride, and with benzoyl chloride yields dibenzhydroxamic acid, C 6 H 5 CO NH O.

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  • In a similar manner, formic acid and dicyanophenylhydrazine yields a phenyl-triazole carboxylic acid, in which the phenyl group may be nitrated, the nitro group reduced to the amino group, and the product oxidized to a triazole carboxylic acid, which, by elimination of carbon dioxide, yields the free triazole: HO 2 C C=N H02C C =N, NPh-> N :CH N :CH They also result when the acidylthiosemicarbazides are strongly heated, the mercapto-triazoles so formed being converted into triazoles on oxidation with hydrogen peroxide (M.

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  • Silicobenzoic acid, C 6 H 5 S10.0H, results from the action of dilute aqueous ammonia on phenyl silicon chloride (obtained from mercury diphenyl and silicon tetrachloride).

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  • It may be obtained by distilling benzyl sulphide !or disulphide, by the action of sodium on benzaldehyde or benzal chloride, by distilling fumaric and cinnamic phenyl esters: C6H50.OC CH:CH CO.OC6H5 - >C02+C6H5.CH:CH CO.006H5 - >2C02 -{-C 6 H 5 CH: CH C 6 H 5 (Ber., 18, p.1945), and fromchlorasymmetrical diphenylethane derivatives which undergo a rearrangement when heated (Ber., 7.

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  • Methyl and phenyl anthracenes are known; phenyl anthranol (phthalidin) being somewhat closely related to the phenolphthaleins.

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  • At a temperature of about 300-400° C. the alkyl chloride formed in this reaction attacks the benzene nucleus and replaces hydrogen by an alkyl group or groups, forming primary amines homologous with the original amine; thus methylaniline hydrochloride is converted into paraand ortho-toluidine hydrochloride, and trimethyl phenyl ammonium iodide is converted into mesidine hydriodide.

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  • It can be prepared by the reduction of phenyl propiolic acid with zinc and acetic acid, by heating benzal malonic acid, by the condensation of ethyl acetate with benzaldehyde in the presence of sodium ethylate or by the so-called "Perkin reaction"; the latter being the method commonly employed.

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  • Cinnamic acid crystallizes in needles or prisms, melting at 133° C.; on reduction it gives phenyl propionic acid, C 6 H 5 CH 2 CH 2 000H.

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  • ANTIPYRINE (phenyldimethyl pyrazolone) (C11H12N20), is prepared by the condensation of phenylhydrazine with acetoacetic ester, the resulting phenyl methyl pyrazolone being heated with methyl iodide and methyl alcohol to loo-110° C.: CH 0=N CH3 C-N CH3 >N C6H5 - II >N C6H6 CH 2 -CO HC-CO Phenyl methyl pyrazolone Antipyrine On the large scale phenylhydrazine is dissolved in dilute sulphuric acid, the solution warmed to about 40° C. and the aceto-acetic ester added.

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  • When the reaction is complete the acid is neutralized with soda, and the phenyl methyl pyrazolone extracted with ether and distilled in vacuo.

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  • Witt (Ber., 1877, 10, p. 656), is obtained by coupling phenyl diazonium chloride with meta-phenylene diamine.

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  • They combine with phenyl isocyanate to form urea derivatives (H.

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  • The benzyl group shows this remarkably well, since we see that phenyl is present, as is also methyl.

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  • We should expect to find supersolubility curves lying below the solubility curves, and this result has been realized experimentally for the supersolubility curves of mixtures of salol (phenyl salicylate) and betol (/3-naphthol salicylate) represented by the dotted lines of fig.

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  • Chloroform may be readily detected by the production of an isonitrile when it is heated with alcoholic potash and a primary amine; thus with aniline, phenyl isocyanide (recognized by its nauseating smell) is produced, CHC13+C6H5NH2+3KHO=C6H5NC+3KC1+3H20.

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  • Those in which the keto groups are in combination with phenyl residues give pyridine derivatives on treatment with hydroxylamine, thus benzamarone, C 6 H 5 CH[CH(C 6 H 5) CO.

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  • It may be synthesized 1py passing the vapour of phenyl butylene bromide over heated soda lime (B.

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  • a-Naphthol may be prepared by fusing sodium-a-naphthalene sulphonate with caustic soda; by heating a-naphthylamine sulphate with water to 200° C. (English Patent 14301 (1892)); and by heating phenyl isocrotonic acid (R.

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  • Carbon dioxide converts it into phenyl nitrosamine, C6H5NH NO (A.

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  • Phenyl nitramine, C 6 H S NH N02, is a colourless crystalline solid, which melts at 46° C. Sodium amalgam in alkaline solution reduces it to phenylhydrazine.

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  • Pinner, Ber., 1893, 26, p. 2125); and with trimethylene bromide to form a phenyl tetrahydropyrimidine (Pinner).

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  • Phenyl tetrahydropyrimidine.

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  • BENZYL ALCOHOL (PHENYL CARBINOL), C 6 H 5 CH 2 OH, occurs as a benzoic ester in Peru balsam, as cinnamic ester in Tolu balsam, as acetic ester in essential oil of jasmine, and also in storax.

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  • For diethyl ether see Ether, and for methyl phenyl ether (anisole) and ethyl phenyl ether (phenetole) see Carbolic Acid.

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  • It results, with other products, in the oxidation of phenyl diazonium chloride with alkaline potassium ferricyanide; of /3phenylhydroxylamine with chromic acid mixture (E.

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  • It exists in two crystalline forms. Nitric acid passed into its chloroform solution gives phenyl diazonium nitrate.

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  • It may be synthetically obtained by distilling oxindole (C 8 H 8 NO) with zinc dust; by heating orthonitrocinnamic acid with potash and iron filings; by the reduction of indigo blue; by the action of sodium ethylate on orthoaminochlorstyrene; by boiling aniline with dichloracetaldehyde; by the dry distillation of ortho-tolyloxamic acid; by heating aniline with dichioracetal; by distilling a mixture of calcium formate and calcium anilidoacetate; and by heating pyruvic acid phenyl hydrazone with anhydrous zinc chloride.

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  • Magnesium phenyl bromide gives triphenyl vinyl alcohol.

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  • With phenylhydrazine it forms a hydrazone, and with hydroxylamine an oxime, which exists in one form only; if, however, one of the phenyl groups in the oxime be substituted in any way then two stereo-isomeric oximes are produced (cf.

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  • It forms a hydrazone with phenyl hydrazine, and an oxime with hydroxylamine.

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  • The truxillic acids, C,8H1504, which result by the hydrolytic splitting of truxilline, C38H46N208, are phenyl derivatives of cyclo-butane.

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  • For phenyl derivatives of the cyclo- pentane group see F.

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  • Fittig and Erdmann's observation that phenyl isocrotonic acid readily yielded a-naphthol by loss of water was of much importance, since it afforded valuable evidence as to the constitution of naphthalene.

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  • Aniline combines directly with alkyl iodides to form secondary and tertiary amines; boiled with carbon disulphide it gives sulphocarbanilide (diphenyl thio-urea), CS(NHC 6 H 5) 2, which may be decomposed into phenyl mustard-oil, C 6 H 5 CNS, and triphenyl guanidine, C 6 H 5 N: C(NHC6H5)2.

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  • DIPHENYL (phenyl benzene), CGH5.C6H5, a hydrocarbon found in that fraction of the coal-tar distillate boiling between 240-300° C., from which it may be obtained by warming with sulphuric acid, separating the acid layer and strongly cooling the undissolved oil.

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