25910-74-1

Basic information

• Product Name: 1-Naphthalenol, 4-[(2-nitrophenyl)azo]-
• Synonyms: (2-Nitro-benzol)-(1 azo 4)-naphthol-(1);4-<2-Nitro-benzolazo>-naphthol-(1);4-(2-Nitro-phenylazo)-[1]naphthol;4-(o-Nitrophenylazo)-1-naphthol;1-Naphthalenol,4-[(2-nitrophenyl)azo]
• CAS NO: 25910-74-1
• Molecular Formula: C16H11N3O3
• Molecular Weight: 293.282
• Mol File: 25910-74-1.mol
• Article Data: 5

Chemical Properties

• CAS DataBase Reference: 1-Naphthalenol, 4-[(2-nitrophenyl)azo]-(CAS DataBase Reference)
• NIST Chemistry Reference: 1-Naphthalenol, 4-[(2-nitrophenyl)azo]-(25910-74-1)
• EPA Substance Registry System: 1-Naphthalenol, 4-[(2-nitrophenyl)azo]-(25910-74-1)

Safety Data

• Hazardous Substances Data: 25910-74-1(Hazardous Substances Data)

Upstream product

• 90-15-3 α-naphthol 
• 62375-90-0 methoxy-(2-nitro-phenyl)-diazene 
• 25910-37-6 2-Nitrophenyldiazonium 
• 88-74-4 2-nitro-aniline 

Downstream Products

• 2834-90-4 4-amino-1-naphthol 
• 95-54-5 1,2-diamino-benzene 

Relevant articles and documents

Nano-Fe3O4 encapsulated-silica supported boron trifluoride as a novel heterogeneous solid acid for solvent-free synthesis of arylazo-1-naphthol derivatives

Nano-Fe3O4 encapsulated-silica supported boron trifluoride (Fe3O4@SiO2-BF3) as a new type of green heterogeneous solid acid was prepared by the immobilization of BF3·Et2O on the surface of Fe3O4@SiO2 core-shell nanoparticles and characterized by Fourier transform-infrared spectroscopy (FT-IR), X-ray diffraction (XRD), vibrating sample magnetometer (VSM), field emission-scanning electron microscope (FE-SEM), energy dispersive X-ray (EDS), and transmission electron microscope (TEM). Then, this super solid acid was used as an acidic reagent for the synthesis of aryl diazonium salts as a starting reactant, followed by its diazo coupling with 1-naphthol in a basic solvent-free medium at room temperature. The main advantages of this clean method were high yields, short reaction times, the possibility of performing it at room temperature, and no need of corrosive and toxic liquid acids and solvents. In addition, the long-term stability of aryl diazonium salts supported on Fe3O4@SiO2-BF3 magnetic nanoparticles (MNPs) at room temperature was one of the most important results of this procedure. This journal is

Facile synthesis of 1-naphthol azo dyes with nano Sio2/Hio4 under solvent-free conditions

Nano-silica supported periodic acid (nano-SPIA) has been utilized as a heterogeneous reagent for a highly efficient and one pot synthesis of azo dyes based on 1-naphthol under solvent-free conditions at room temperature. This method has some advantages, the reaction workup is very easy and the catalyst can be easily separated from the reaction mixture and one-pot procedure. The related products have been obtained in good to excellent yields, high purity and short reaction times. The structures of the products have been characterized by several techniques using UV-Vis, FT-IR, 1H NMR, 13C NMR and mass spectra.

A Simple Route for the Synthesis of Chlorosubstituted Arylazobenzenes, Arylazonaphtalenes, and Arylazopyrazoles

The reaction of arylazophenoles and arylazohydroxypyrazoles (or their tautomer hydrazones) 10, 11, and 15 with POCl3 in dimethylformamide yields chlorosubstituted arylazobenzenes or arylazopyrazoles 12, 13 and 16, resp., in moderate to high yields.The substitution of the OH-group by the Cl-moiety is favoured by acceptor substituents in the aryl fragments ortho- and/or para-linked to the azo group.In case that arylazocompounds derived from resorcinol are used the substitution reaction runs in a stepwise manner giving raise to the formation of o-hydroxy-p-chlorosubstit uted azo compounds 18 primarily and then of dichlorosubstituted azo compounds 19.