Azobenzene-3-carboxylic acid

In a similar manner, anhydro-2-hydroxy-3-hydroxymercuri-5" methyl-azobenzene-4 -carboxylic acid is jirepared, and its properties are verj like those of its isomer,... 

Carbonyl compounds Azobenzene-4-carboxylic acid hydrazide. l,2-Dimethyl-4,3-di(mercaptomethyl)benzene. N,N-Dimethylglycinehydrazide hydrochloride. 2,4-Dinitro-phenylhydrazine. 2-Diphenyiacetyl-l,3-indanedione-l-hydrazone. Ethoxycarbonylhydrazine. 

Kagechika H, Himi T, Namikawa K, Kawachi E, Hashimoto Y, Shudo K (1989) Retinobenzoic acids. 3. Stmcture-activity relationships of retinoidal azobenzene-4-carboxylic acids and stilbene-4-carboxylic acids. JMedChem 32 1098-1108... 

Azinodi(3-ethylbenzothiazoline)sulfonic acid, see A-00462 ,o -Azoanisole, in D-00514 /7,/7 -Azoanisole, in D-00516 Azo-azohydroxy BN, see A-00465 Azo-azoxy AN, A-00464 Azo-azoxy BN, A-00465 Azo-azoxy PMP, A-00466 Azobenzene-4-carboxylic acid, A-00467 Azobenzene-4-sulfonic acid, A-00468 4,4 -Azobis[3-hydroxy-2,7-... 

Acetyl methanesulfonate, A-00020 9-Anthracenecarbonyl chloride, in A-00378 (Azidocarbonyl)ferrocene, A-00459 (3-Azido-3-oxopropyl)ferrocene, A-00461 Azobenzene-4-carboxylic acid Chloride, in A-00467... 

Some pH sensitive ionophores have been incorporated into liquid membranes in the construction of capillary glass micro pH sensors. Apart from ETH 1907 trido-decylamine [74], and ETH 2418 [4 -(dipropylamino)-2-azobenzene-carboxylic acid octadecylester] [75], the Fluka 95291 hydrogen ion sensitive resin cocktail A, a well-known commercial pH sensitive ionophore, has been used in many studies [76],... 

Note No higher nitrated derivs of azobenzene-carboxylic acid as well as azido- and diazido-... 

Phenylazodiphenylamine A420-R Phenylazobenzoic Acid. See Azobenzene-carboxylic Acid A650-R Phenylazoxybenzoic Acid. See Azoxybenzene-carboxylic Acid A668-L N,N-o-Phenyleneguanidine. See 2-Amino-benzimidazole A187-L Phenylethanolamine. See under Anilinoethanol A424-L... 

Kunitake and coworkers have explored molecularly imprinted ultrathin titanium dioxide films. Employing a procedure of sequential chemisorption and activation onto quartz crystal microbalance (QCM) resonators, they have been able to produce stable films selective for azobenzene carboxylic acids [26] and protected amino acids [27]. In collaboration with Willner and co-workers, they have also used their synthesis techniques to functionalize ion-sensitive field-effect transistors (ISFET) with imprinted Ti02 films [28[. The resulting sensors displayed impressive selectivity in distinguishing two chloroaromatic acids. Additionally, Willner and coworkers [29] have used similar ISFET devices to generate enantioselective and enantiospecific sensors for 2-methylferrocene carboxylic acid, 2-phenylbutanoic acid, and 2-propanoic acid. 

Lee, S.W. Ichinose, I. Kunitake, T. Molecular imprinting of azobenzene carboxylic acid on a Ti02 ultrathin film by the surface sol-gel process. Langmuir 1998, 14, 2857-2863. 

Fig. 12 Assembly of azobenzenes via carboxylic acid dimers, a TEM-micrograph of elongated aggregates (b, c) models for rod- and fiber-type structures. Reprinted with permission from [74]...

SYNS C.1.13020 C.I. ACID RED 2 p-piMETHYLAMINO)AZOBENZENE-o-CARBOXYLIC ACID 4 -DIMETHYLAMIN0AZ0BENZENE-2-CARBOXYLIC ACID o-((p-(DIMETHYLAMINO)-PHENYL)AZ0)BENZ0IC ACID 2-((4-DIMETHYL-AiMINO)PHENYLAZO)BENZOIC ACID METHYL RED... 

Anhydro - 2 - hydroxy - 3 - hydroxymercuri - 5 - methyl-azobenzene - 2 - carboxylic acid is prepared using anthranilie instead of sul >hanilic acid. The free acid is deep red, but no method is available for its purification, owing to its insolubility in all except basic solvents. The pures product is obtained when exact quantities of carefully purifitxl anthranilie acid and mercurated cresol are used. 

A suspension of the reagent oxidizes aniline at 80° to azobenzene in 80% yield and it oxidizes benzylamine at 60° to benzonitrile in 78% yield. Nickel peroxide oxidatively cleaves a-glycols and a-hydroxy acids in aprotic solvents (benzene, ether)." In an aqueous alkaline solution a-ketols and a-keto acids are cleaved to carboxylic acids. The reagent thus resembles lead tetraacetate. 

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