121199-72-2

Upstream product

• 135-19-3 β-naphthol 
• 309287-40-9 1-(4-carboxyphenyl)-3,3-(1,4-butanediyl)-triazene 
• 150-13-0 4-amino-benzoic acid 

Relevant academic research and scientific papers

Convenient and rapid diazotization and diazo coupling reaction via aryl diazonium nanomagnetic sulfate under solvent-free conditions at room temperature

For the first time, nanomagnetic-supported sulfonic acid is used for conversion of several types of aromatic amine, containing electron-withdrawing groups as well as electron-donating groups to the corresponding azo dyes in excellent yield. The synthesis of these compounds is described by the sequential diazotization-diazo coupling of various aromatic amines with sodium nitrite, nanomagnetic supported sulfonic acid and coupling agents under solvent-free conditions at room temperature. This new method offers several advantages including short reaction time, mild reaction conditions, avoidance of harmful acids, and simple work-up procedure. More importantly, aryldiazonium salts supported on magnetic nanoparticles (aryl diazonium nanomagnetic sulfate) were sufficiently stable to be kept at room temperature in the dry state.

Synthesis, structural characterization and antimicrobial activities of triorganotin(IV)azo-carboxylates derived from ortho/para-amino benzoic acids and β-naphthol

Triorganotin (IV) complexes 1–3 were synthesized by the reaction of azo-carboxylic acid viz. 2/4-(2-hydroxynaphthylazo)benzoic acids with appropriate triorganotin(IV) chlorides [R = Me (compounds 1 and 2) and Bu (compound 3)] in presence of triethyl amine

Synthesis of dyes from aromatic C-nitroso-N-hydroxytriazenes

Aromatic C-nitroso-N-hydroxytriazenes can be used as stable forms of diazo compounds for preparation of azo dyes.

On the azo dyes derived from benzoic and cinnamic acids used as photosensitizers in dye-sensitized solar cells

In order to get a better insight into the relationship between molecular structure and photovoltaic performance, six monoazo dye molecules containing benzoic and cinnamic acid moieties were synthesized and their photovoltaic properties were studied. Three of them have not been previously used in solar cells. Spectroscopic measurements of the investigated compounds coupled with theoretical calculations were performed. Short-circuit current density, open-circuit voltage, and fill-factor were determined. It was found that a larger amount of short-circuit current density will be generated if the HOMO–LUMO energy gap is lower, determined by the stability of the molecule and the electronic effect of the donor moiety. Among both series of synthesized dye molecules, the highest obtained values of short-circuit current density were achieved with (2-hydroxynaphthalene-1-ylazo)benzoic acid and (2-hydroxynaphthalene-1-ylazo)cinnamic acid, and thus they were regarded as promising candidates for application in dye-sensitized solar cells.

An environmentally friendly approach to the green synthesis of azo dyes with aryltriazenes via ionic liquid promoted C-N bonds formation

An efficient and green approach for the synthesis of azo dyes has been developed via the Br?nsted acidic ionic liquid (IL) promoted diazo coupling reaction of naphthols with aryltriazenes. The reaction was carried out with the aryltriazenes as diazotizing

Understanding the electron transfer process in ZnO-naphthol azobenzoic acid composites from photophysical characterisation

Semiconductor nanoparticles surface modified with organic molecules capable of visible light absorption and effectively transferring the electrons to the catalytic sites have the potential to be good photocatalysts. ZnO nanoparticles of size ～3 nm are gra

A new nano silica gel supported by thionyl chloride as a solid acid for the efficient diazotization of aniline derivatives: Application and synthesis of azo dyes

A new nano silicagel supported by thionyl chloride as a solid acid was synthesized and used as a increasing the production yield of dye to affect the efficient diazotization of arylamines. The diazonium salts thus obtained were coupled, using standard exp

COORDINATION CHEMISTRY OF SOME AZO COMPOUNDS. 2-CARBOXYPHENYL AZO-β-NAPHTHOL AND 4-CARBOXYPHENYL AZO-β-NAPHTHOL COMPLEXES WITH IRON(III), IRON(II), COBALT(II), NICKEL(II) AND COPPER(II) IONS

The reaction of 2-carboxyphenyl azo-β-naphthol (H2L) and 4-carboxyphenyl azo-β-naphthol (H2), with Fe(II), Co(II), Ni(II) and Cu(II) ions resulted in formation of ML*nH2O and M*nH2O complexes (n = 1, 2, 3 or 4).In the case of Fe(III), a complex of F