15236-63-2

Upstream product

• 89-86-1 4-hydroxysalicylic acid 
• 100-34-5 benzene diazonium chloride 
• 2051-85-6 4-(phenylazo)-1,3-benzenediol 
• 108-46-3 recorcinol 
• 62-53-3 aniline 
• 2684-02-8 benzenediazonium 
• 102-29-4 Resorcinol monoacetate 

Downstream Products

• 15791-87-4 4,6-diamino-1,3-benzenediol 
• 62-53-3 aniline 
• 1428258-50-7 2-(2,6-dihydroxy-3,5-bis-phenylazophenyl)-but-2-ene dioic acid dimethyl ester 
• 16523-31-2 4,6-diaminoresorcin dihydrochloride 
• 1428258-51-8 2-(2,6-dihydroxy-3,5-bis-phenylazophenyl)-but-2-en dioic acid diethyl ester 
• 10462-55-2 2,4,6-tris-phenylazo-resorcinol 

Relevant academic research and scientific papers

Preparation method of 4,6 - diphenyl azo resorcinol and 4,6 - diaminoresorcinol (by machine translation)

The invention relates to a preparation method of 4,6 - diphenyl azo resorcinol and 4,6 - diaminoresorcinol, wherein the phenylamine diazonium liquid is obtained by diazo reaction of aniline as a raw material; and the aniline diazonium liquid, the liquid base and the resorcinol aqueous solution are pumped into the dynamic tubular reactor according to a certain proportion, a flow speed and a sequential pump to obtain 4,6 -diphenyl azo resorcinol; and a high-purity 4,6 - diaminoresorcinol is obtained through hydrogenation. 4,6 -diphenyl azo resorcinol prepared by the present aniline method contains a small amount 2, 4 of substituted isomers and three-substituted impurities, and the problem of subsequent hindrance polymerization is influenced by virtue of the method, the purity of the diphenyl azo resorcinol obtained by the method is high, and the obtained 4,6 - 4,6 -diaminoresorcinol is less in impurities. (by machine translation)

An experimental and theoretical study on influence of H-bonding on the synthesized azo derivatives structures

We have reported a simple and efficient reaction for the synthesis of some new functionalized azo structures which were prepared by electron deficient acetylenic compounds in the presence of triphenylphosphine. The characterization of the synthesized azo compounds has been determined by FTIR, UV-Vis, 1H NMR, 13C NMR andMass spectroscopic techniques. The influence of H-bonding on the products has been shown by different experimental analysis. Also, the regioselectivity of the reaction, tautomerization equilibrium and the stability of products was investigated using DFT calculations at the B3LYP/6-31G level of theory.

Preparation of 4,6-diaminoresorcinol through a bisazoarylresorcinol intermediate

The present invention is a method of preparing a 4,6-bisarylazoresorcinol comprising reacting an aryldiazonium salt and resorcinol in the presence of a base and a reaction medium containing water and a water-miscible solvent at a temperature in the range

Kinetic Studies of the Deprotonation of Bis(phenylazo)resorcinol Monoanions by Hydroxide Ion

Interconversion of the intramolecularly Hydrogen-bonded monoanions of 2,4-bis(phenylazo)resorcinol, 4,6-bis(phenylazo)resorcinol, and 2-methyl-4,6-bis (phenylazo)resorcinol with the corresponding dianions in the presence of hydroxide ion in aqueous solution or in 20 percent dioxane-water (v/v) gives complex kinetic behaviour in which the reciprocal relaxation time for the process goes through a minimum value as the hydroxide ion concentration is increased.The results are used to provide a choice between two proposed mechanisms for the similar behaviour of monophenylazoresorcinols.It is argued that the behaviour of monophenylazoresorcinols and bis(phenylazo)resorcinols is compatible with a mechanism for the interconversion of the monoanions and dianions by two simultaneous pathways.One path involves direct attack by hydroxide ion on the hydrogen-bonded proton and in the other path the hydrogen-bonded monoanion is converted into a non-hydrogen-bonded open form from which the proton is removed by hydroxide ion.Values of the rate coefficients for some of these steps are deduced from the kinetic results.