4-amino-1,3-dimethyl-benzene

Axial dispersion coefficient p-dimethyl amino azo benzene Domain antibodies... 

Two isomers are known 4-Azido-3-nit.ro-l,5 (iimethylbenzene, wh ndls (from ale), mp 66° sol in common org solvs was obtd by reaction of NH3 on the diazoperbromide of 5-nitro-4-ami no-1,3" dimechylbenzene hy heating under vacuum at 130°, the 4,5-Dinitroso-l,3"dimethyl-benzene deriv is formed (Ref 1, p38l Ref 3) 4-Azido 6-nitro-l 3-dimethylhenzene, ndls (from dil ale), mp 75° readily sol in ale vol in steam was obtd from the 6-nitro-4-amino deriv (Ref 1, p382 Ref 2)... 

Dimethylaminobenzeneazotriazole Azide, [(3-p-Dimethylaminophenylazo)-5-azido]-asym-triozole, or 5-Azido-3 (4-dimethyl-amino-l-benzene)-azotriazole-l,2,4. 

U150. . Alanine, 3-(p-bis(2-chloroethyl)amino) U239. . Benzene, dimethyl-(1,T)... 

The synthesis of amino functional PPV presented some serious synthetic challenges. Usually, a radical halogenation step is used in making the precursors to PPV. For example, 1,4-dimethyl benzene would be chlorinated or brominated to make a precursor to PPV. Although this method can be adapted well for the alkoxy... 

Methyl yellow is also known as Tdpfer s indicator or dimethyl-amino-azo-benzene. It will be seen that some of the indicators have an... 

The silacarborane analogue of C,C-dimethyl-o / o-carborane, closo-l]l-((C i]) -l]lSi[ fri [128270 8 ] h.3.s been reported (179). This o-sdacarborane, which has an icosahedral framework much like o-carborane and is reported to be stable to air and moisture, was obtained in low yield from the reaction of decaborane and bis (dimethyl amino)metbyl silane in refluxing benzene. 

A mixture of 8.5 g (0.03 mol) of 6-chloro-4-amino-benzene-1,3-disuifonamide, 4.0 g (0.033 mol) of 2,5-endomethylene-A -tetrahydrobenzaldehyde and 25 cc of diethylene-glycol-dimethyl ether was heated for 2 hours at 100°C. During this time the major portion of the initialiy undissolved crystals went into solution thereafter, the reaction mixture was allowed to stand for 14 hours at room temperature, during which the remaining undissolved crystals also went into solution. The reddish, clear solution thus obtained was admixed... 

For purification, the product is recrystallized from 15 times the amount of a 9 1 mixture of acetone and water. The resulting N -[p-amino benzene sulfonyl]-N -(4,5-dimethyl-oxa-zolyl-(2)] guanidine is obtained as colorless crystals having a MP of 233 to 236°C. 

DIRECTED ALDOL CONDENSATIONS threo-4-HYDROXY-3-PHENYL-2-HEPTANONE, 54, 49 DIRECTED LITHIATION OF AROMATIC COMPOUNDS (2-DIMETHYL-AMINO- 5-METHYLPHENYL) DI-PHENYLCARBINOL, 53, 56 DIRECT IODINATION OF POLYALKYL-BENZENES IODODURENE, 51, 94 Disiamylborane, 53, 79 Disodium hydroxylaminedisulfo-nate, 52, 83... 

The reaction of dimethyl amino(butylamino)methylenemalonate (1364) and Af-(chlorocarbonyl)isocyanate in benzene afforded (l,3,5-triazin-2-ylidene)malonate (1365) in 52% yield and the hydrochloride salt of the starting material (1364 x HC1) (76ZOR2253). 

Sulfasalazine Sulfasalazine, 5-[p-[(4,6-dimethyl-2-pyridinyl)sulfamoyl]phenylazo]sali-cylic acid (33.1.22), is a derivative of sulfapyridine drug described above and one of the few sulfanilamides in which the free amino group in the benzene ring is modified, and it is synthesized by an azo-coupling reaction of a diazo salt, which is synthesized by reacting sulfapyridine (33.1.21) with nitrous acid and salicylic acid alkaline media [24,25]. 

If l,l-bis-dimethylamino-2.4.6-triphenyl-X -phosphorin 164 is allowed to react with 2 moles of trifluoroacetic acid and a 10-fold molar excess of methanol in refluxing benzene, one of the amino groups is displaced and 1-methoxy-l-dimethyl-amino-2.4.6-triphenyl-X -phosphorin 757 can be isolated in good yield. The phos-phonium salt 165 (H can also attack C-2) is initially formed by protonation of 164 at C-4 (or C-2). Nucleophilic substitution then leads to 167 via 166 (Hettche, >). 

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