2-methyl-4,5-diphenyl

Trace impurities present in commercial benzoic acid include methyl diphenyls and phthaHc acids. The concentration and presence of these impurities vary by product grade and by manufacturer. Gas chromatography and high pressure Hquid chromatography are useful for determining the concentrations of those impurities. [Pg.54]

Yields of 54% of 2-methoxy-4 -methyl diphenyl ether from -bromotoluene and guaiacol, and 60% of 2-mcthoxy-5-methyl-diphenyl ether from 3-bromo-4-methoxytoluene and phenol, have been obtained by the same method in the laboratory of the submitters,... [Pg.51]

The condensation of thiophene with ketones, under the influence of 70% H2SO4, leads to di-2-thienylmethane derivatives. With acetone, 2,2-di-(2-thienyl) propane (97) is obtained. The condensation of thiophene with dimethyl phenyl carbinol, methyl diphenyl carbinol, and f-butylalcohol, in the presence of SnCU gave (98), (99), and 2,5-di-f-butylthiophene, respectively. Triphenyl carbinol does not... [Pg.39]

Oxirane lassen sich durch Methyl-diphenyl-phosphan unter Konfigurationsum-kehr (98%ige Stereospezifitat) zu Alkenen reduzieren (Phosphor-Betain-Methode)2 ... [Pg.570]

Methyl-diphenyl- 570 Triathyl- 571, 573 Tributyl- 570, 573 Triphenyl- 569ft., 572ff. [Pg.1000]

Treatment of methylated diphenyl ethers with BuLi/TMEDA in cyclohexane/diethyl ether followed by addition of CuCl resulted in excellent yields of the corresponding dibenzofinans <96JCR(S)362, 96JCR(M)2016>. An efficient route to meso benzoxabicyclo[2.2. IJheptyl derivatives beginning fi om p eronal has been developed (Scheme 24). [Pg.140]

Various thiourea ligands have been used in the synthesis of mixed ligand complexes. A series of complexes [NiQ2L2] (HQ = ethylacetoacetate, L = thiourea, allyl-, benzoyl-, methyl-, diphenyl-thiourea) have been prepared. The complexes are all paramagnetic (/i = 3.02-3.27/iB) and have been assigned tra 5-octahedral structures.1014... [Pg.337]

Methyl-diphenyl, cyclization, 30 65 2-Methyl-2,4-diphenylpentane, hydrogenolysis, 35 330... [Pg.143]

By reacting the higher homolges of the methyl-diphenyl-arsaneoxide with lithium-diisopropylamide and then with electrophiles (Scheme 17) compounds of the type 12a are accessible in similar yields (Table... [Pg.121]

Bei der uber Dehydrobenzol verlaufenden Reaktion von Fluorbenzol mit N,N-Dimethyl-anilin und Bu-tyllithium in Hexan erhalt man in niedriger Ausbeute ein Gemisch von Methyl-diphenyl-amin (Hauptpro-dukt) und 2-Dimcthylamino-biphenyl... [Pg.686]

Tetranitro-3-methyl-diphenyl-amine, or N-(21,4 -Dinitropkenyl)-4J6-dinitro-m-toluidine, (02N)2C H,.NH.C6Ha(NOa)a.CHs-t yel plates (from AcOH), mp 208-9°. Was obtained on heating on a water bath 3-methyl-21,4 -dinitrodiphenylamine with coned HaS04 and HN03(d 1.42) until the soln became pale yel (ca A hr). Its expl props were not examined... [Pg.440]

Tetranitro-2-methyldiphenylamine or N-(2, 4 -Dinitrophenyl)-4,6- dinitro-o-toluidine, (02N)2C8H3,NH. C6H2(CH3)(N02)2 yel ndls, mp 190° Can be prepd by heating, on a steam bath, 2 4 -dinitro-2-methyl-diphenyl amine with a mixt of glacial AcOH and nitric acid (dl.42) until a straw colored soln is obtained (ca A hr). Its expl props were not examined... [Pg.440]

Treatment of the o-methyl diphenyl ether complex 58a with isobutyronitrile carbanion at —78 °C and then allowing the reaction mixture to warm up to room temperature affords the ipso complex 59a almost quantitatively. Ipso SNAr of the phenoxy group also occurs with acetonitrile, propionitrile, and alkoxycarbonyl carbanions (Scheme 28) [46]. Similarly, addition of isobutyronitrile carbanion to 2,3-dimethyl diphenyl ether complex 58b gives exclusively complex 59b under the same experimental conditions. [Pg.385]

Bii-[l-methyl-propyl]-amino)-methyl]-diphenyl-phosphanoxid 86% Schmp. 117-118°... [Pg.14]

Die Orthoester von Ameisensaure setzen sich in sehr guten Ausbeuten mit Chlor-diphe-nyl-phosphan zu (Dialkoxy-methyl)-diphenyl-phosphanoxidenum105 (s. S. 25). Andere Orthoester reagieren nicht. [Pg.17]

Chlor-2-hydroxy-propyloxy)-hydroxy- El, 315f. (Chlor-3-indolyl-methyl)-diphenyl- E2, 12 Chlormethyl-dibenzyl- E2, 218, 219 Chlormethyl-dimcthyl- E2, 63 Chlormethyl-diphenyl- XII/1, 155 Chlormethyl-hydroxy-... [Pg.1010]

Diazo-ethoxycarbonyl-mcthyl)-diphenyl- E2, 220 f l-Diazo-2-(2-furyl)-2-oxo-ethy[]-diphenyl- El, 592 (Diazo-methyl)-diphenyl- El, 586f, E2, 145, 220 (l-Diazo-2-oxo-2-phenyl-ethyl)-diphenyl- El, 593... [Pg.1010]

Triphenyl telluronium chloride11 or methyl diphenyl telluronium iodide12 dissolved in hot water precipitated the corresponding telluronium pseudohalide when mixed with an aqueous solution of an alkali metal or silver pseudohalide. [Pg.697]

Methyl diphenyl telluronium benzoates slowly eliminated methyl benzoates9. [Pg.705]

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