2724-85-8

Upstream product

• 88-74-4 2-nitro-aniline 
• 25910-37-6 2-Nitrophenyldiazonium 
• 108-95-2 phenol 
• 17440-81-2 triethylammonium 
• 64-17-5 ethanol 
• 106-51-4 p-benzoquinone 
• 6293-87-4 o-nitrophenylhydrazine hydrochloride 
• 119-66-4 2-nitrobenzenediazonium chloride 
• 99-96-7 4-hydroxy-benzoic acid 

Downstream Products

• 35527-28-7 4’-methoxy-2-nitroazobenzene 
• 3682-83-5 2-(4-hydroxyphenyl)benzotriazole 
• 38501-87-0 1-(3-formyl-4-hydroxyphenylazo)-2-nitrobenzene 
• 22713-40-2 2-(4-Hydroxyphenyl)benzotriazole N-oxide 
• 3933-76-4 2-(4-methoxyphenyl)-2H-benzo[d][1,2,3]triazole 
• 17440-81-2 triethylammonium 

Relevant academic research and scientific papers

A convenient protocol for the synthesis of 2-(2′-Hydroxy-5′- carboxyphenyl)-2H-benzotriazole to avoid decarboxylation when using p-hydroxybenzoic acid as coupling component

In the study of the synthesis of 2-(2′-hydroxy-5′- carboxyphenyl)-2H-benzotriazole, we found that decarboxy intermediate-4-((2- nitrophenyl)diazenyl)phenol was obtained when using p-hydroxybenzoic acid as coupling component. A convenient protocol for the synthesis of 2-(2′-hydroxy-5′-carboxyphenyl)-2H-benzotriazole is reported with methyl-p-hydroxybenzoate as coupling component. Different dizao components and different coupling components were also used for further investigation of decarboxylation.

New fluorescent symmetrically substituted perylene-3,4,9,10-dianhydride- azohybrid dyes: Synthesis and spectroscopic studies

Five phenolic azo-dyes (3a-e) were synthesized by diazo coupling of the suitably substituted anilines (1a-e) with phenol at low temperature in alkaline medium. The resulting dyes have low solubility in aqueous medium due to lack of carboxylic or sulfonic

Benzotriazol type liquid crystals

A new series of liquid crystals (LCs), benzotriazol type which have high absorptivities to ultraviolet (UV) light within the wavelength range from 290 to 350 nm were synthesized. Their syntheses and liquid crystalline properties are reported in this paper

BASIC PROPERTIES OF 4-ARYLAZO-PHENOLS AND 4-ARYLAZO-ANISOLES

The conditions in which 4-arylazo-phenols and 4-arylazo-anisoles have basic properties have been studied.We have also determined the equilibrium constants of the reactions between 4-arylazo-phenols or 4-arylazo-anisoles with perchloric acid in nitromethane, acetonitrile and acetic acid.Conclusions have been drawn from the influence of the nature of solvent and substituent at the benzene ring on equilibrium constant values.