40339-35-3

Upstream product

• 93449-60-6 (Z)-1-(2-phenylhydrazono)naphthalen-2(1H)-one 
• 135-19-3 β-naphthol 
• 62-53-3 aniline 
• 36719-71-8 (E)-1-phenyl-2-(pyrrolidin-1-yl)diazene 

Downstream Products

• 93449-60-6 (Z)-1-(2-phenylhydrazono)naphthalen-2(1H)-one 
• 71351-99-0 cis-1-Phenylazo-2-naphthol 
• 1602-30-8 1-phenyl-azo-2-naphthol 
• 2834-92-6 1-amino-2-naphthol 
• 62-53-3 aniline 
• 91-22-5 quinoline 
• 119-65-3 isoquinoline 
• 95-13-6 1-indene 
• 1198-27-2 1-aminonaphthalene-2-ol hydrochloride 
• 138073-04-8 tin(IV) chloride *(2-hydroxynaphthylazo)benzene 
• 2719-21-3 4-(N-acetylamino)acetophenone 

Relevant academic research and scientific papers

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

Exploring flow procedures for diazonium formation

The synthesis of diazonium salts is historically an important transformation extensively utilized in dye manufacture. However the highly reactive nature of the diazonium functionality has additionally led to the development of many new reactions including

Azo compounds reducing formation and toxicity of amyloid beta aggregation intermediates

The present invention relates to compounds suitable as modulators of protein misfolding and/or protein aggregation. The compounds are particularly suitable as inhibitors of amyloid aggregate formation and/or modulators of amyloid surface properties, and/or as activators of degradation or reduction of amyloid aggregates.

A green alternative to synthetize azo compounds

Different nitrates were used as sources of nitrosonium ion to obtain diazonium salts. Diverse azo compounds were synthetized in acetonitrile giving very good yields and free of by-products in comparison with traditional synthesis. Among the tested species, the best combination for para red synthesis was nitric acid and gaseous hydrogen chloride.

Solid state photolysis of triazene 1-oxides with naphthols. Synthesis of azo dyes

Sunlight irradiation of solid mixed crystals of the photolabile triazene 1-oxides and α- or β-naphthol afford azo dyes.

Gas-chromatographic studies using glass capillary columns with crown-ether type stationary phases. I β-naphthol-azo-crown ethers and related compounds: Synthesis and properties

Azoderivatives containing residues of benzo-15-crown-5 or benzo-18-crown-6 and 2-naphthol were synthesised in order to be employed as stationary phase in GC studies with glass capillary columns. Analogous azo compounds containing anisole, veratrole and phenyl residues were used for comparison. The compounds were characterised by UV-VIS, NMR and DSC measurements.

Synthesis and Chemical Transformations of 1,3-Diaryltetrazolium Salts. Preparation of Mercury(II) and Palladium(II) Complexes of 1,3-Diaryltetrazolylene and Reactions of 5-Substituted 1,3-Diphenyltetrazolium Salts with Nucleophiles

1,3-Diaryltetrazolium salts 5 and 6 have been prepared by nitric acid oxidation of the corresponding 5-thiolates 4.The reaction of 5 with mercury(II) acetate gives (1,3-diaryltetrazolylene)mercury(II) complexes 7, which provide 5-halotetrazolium salts 8-10 by treatment with halogen. 1,3-Diphenyltetrazolylene (16), generated in situ by proton abstraction of 1,3-diphenyltetrazolium salts 5a or 6a, has been trapped with p-(dimethylamino)benzenediazonium tetrafluoroborate to form 18/18'.The palladium(II) complex 19 of 1,3-diphenyltetrazolylene has been prepared by oxidative addition of tetrakis(triphenylphosphane)palladium(0) to 5-chlorotetrazolium salt 8.The reactivity of various 5-substituted tetrazolium salts toward carbon nucleophiles depends on the nature of the substituents at C-5.With electronegative substituents, nucleophilic substitution proceeds at C-5, whereas electron-donating substituents direct the nucleophiles towards N-2 yielding ring-cleaved products.Key Words: Mesoionic compounds / Tetrazolium salts, 1,3-diaryl / Carbenes, mesoionic / Carbene-metal complexes / Nucleophilic substitution

(13)C NMR and X-ray Structure Determination of 1-(Arylazo)-2-naphthols. Intramolecular Proton Transfer between Nitrogen and Oxygen Atoms in the Solid State

The tautomeric reaction involving a single proton transfer in 1-(phenylazo)-2-naphthol and its 4'-methoxy, ethoxy, and N,N-dimethylamino derivatives has been investigated with variable-temperature solution and high-resolution solid-state (13)C NMR spectroscopy.Crystal structures of the parent unsubstituted compound and the 4'-N,N-dimethylamino derivative have been determined.All of these compounds undergo a fast proton exchange on the NMR time scale between the tautomeric azo and hydrazone forms in both solution and the crystalline phase.Equilibrium compositions inthe solid materials are similar to those measured in solution.Crystals of 1-(phenylazo)-2-naphthol are monoclinic, a = 27.875 (7), b = 6.028 (2), c = 14.928 (5) Angstroem, β = 103.57 (2)0, the space group is C2/c with Z = 8, and the structure at 213 K was refined to an R factor of 0.0414 on 1082 observed reflections.Crystals of 1-(azo)-2-naphthol are monoclinic, a = 7.604 (1), b = 7.970 (3), c = 24.381 (7) Angstroem, β = 99.33 (2)0, the space group is P21/c with Z = 4, and the structure at 193 K was refined to an R factor of 0.0405 on 1522 observed reflections.

Insecticide evaporator comprising a stabilizer

Insecticide evaporator comprising at least one volatile phosphoric ester insecticide, an agent for stabilizing the said ester against decomposition by protonization and used in an amount of 0.2 to 20% based on the weight of phosphoric ester, characterized in that the stabilizing agent contains at least one compound selected from the compounds of the chemical class of 1,3-benzodioxoles and at least one diazene.

Insecticide evaporator comprising DDVP with synergized benzodioxole compound as stabilizer

Insecticide evaporator comprising at least one volatile phosphoric ester insecticide, an agent for stabilising the said ester against decomposition by protonisation and used in an amount of 0.2 to 10 % based on the weight of phosphoric ester, characterised in that the stabilising agent contains at least one compound selected from the compounds of the chemical class of 1,3-benzodioxoles and the balance of said stabilising agent being selected from elemental sulphur, a compound of divalent sulphur, a diazene and an epoxidized compound.