Methyldiphenyl amine

At the same, time attempts to apply this approach to the synthesis of phenotel-lurazine and its A-methyl derivative using diphenylamine and A-methyldiphenyl-amine as starting materials failed [83JOM(251)223 85KGS757]. The parent phe-notellurazine 35 (M = NH, R = R = H) has been prepared in low yield (7%) by refluxing an acetic acid solution of 4-trichlorotellurodiphenylamine 39 (89H1007). 

The smooth intramolecular nucleophilic displacement of biphenyl carboxylic acids leading to benzocoumarins (See Section II.A.) inspired also investigation of the behavior of similar diphenyl ether, diphenyl sulfide and A-methyldiphenyl amine derivatives 458 under similar conditions. However, all these attempts to achieve cyclization to tricyclic compounds 459 were unsuccessful, probably due to the unfavorable stereochemistry for the formation of the required seven-mem-bered transition states and also to the presence of the deactivating bridge groups X (Eq. 42) [68JCS(C)1030]. 

Methyl Cyanide. See Acetonitrile A43-L Methyldiphenyl amine. See under Anilino-toluene A438-L... 

Oyama and coworkers analyzed the decay of diphenylamine and Af-methyldiphenyl-amine cation radicals in ACN59,77 using their ETFS method. Similarly to what was mentioned above, these cation radicals were generated quantitatively by electron transfer with TBPA+ and their absorption spectra (Amax = 675 and 639 nm, respectively) could be successfully observed in a time frame of less than a few tens of milliseconds and, as a result, the kinetics of dimerization could be analyzed. In both cases the reactions were found to be of second order in the radical cations concentration, and the corresponding rate... 

Similar spectra of molecular cation radicals have been obtained earlier in the author s laboratory for diphenylamine, iV-methyldiphenyl-amine, N, iV -dimethyl-p-phenylenediamine (77a) and also for benzidine (27), when adsorbed from their vapors on the natural alumosilicate, bentonite. However, in these instances the degassing and vacuum treatment of the adsorbent could not be pushed so far, as for silica-alumina. Therefore doubt might arise whether the coloration should not be ascribed to traces of active oxygen (cf. Section V, G). 

The substituted 2-hydroxybenzophenone, 2-(2-hydroxy-4-di-n-butylamino)-benzoylbenzoic acid underwent reaction with 4-methoxy-2-methyldiphenyl-amine in concentrated sulphuric acid at 10-1 during 20 hours followed by work-up in alkaline solution and a final treatment by refluxing in hot toluene for 2 hours to give 2-anilino-3-methyl-6-dibutylaminofluoran in 88% yield (ref.81). 

SYNS BIANISIDINE 4,4 -BI-o-TOLUIDINE C.I. 37230 C,I. AZOIC DIAZO COMPONENT 113 (4,4 -DI-AMINE)-3,3 -DIMETHYL(l,l -BIPHENYL) 4,4 -DIAM-INO-3,3 -DIMETHYLBIPHENYL 4,4 -DIAMINO-3,3 -DI-METHYLDIPHENYL DIAMINODITOLYL 3,3 -DI-METHYLBENZIDIN 3,3 -DIMETHYI.BENZIDINE 3,3 -DLMETHYL-4,4 -BIPHENYLDIAMINE 3,3 -DI-xMETHYLBIPHENYL-4,4 -DIAMINE 3,3 -DIMETHYL-(l,l -BIPHENYL)-4,4 -DIAMINE 3,3 -DIMETHYL-4,4 -DI-PHENYLDIAMINE 3,3 -DIMETHYLDIPHENYL-4,4 -DI-AMINE 4,4 -DI-o-TOLUIDINE FAST DARK BLUE BASE R RCRA WASTE NUMBER U095 o-TOLIDIN 2-TOLIDIN (GERMAN) 2-TOLIDINA (ITALIAN) TOLIDINE o,o -TOLIDINE 2-TOLIDINE 3,3 -TOLIDINE... 

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