6638-21-7

Usage

Uses

Used in Plastics Industry:
1-((E)-((4-methylphenyl)imino)methyl)-2-naphthol is used as a coloring agent for plastics, providing a vibrant red hue to the material.
Used in Textile Industry:
In the textile industry, 1-((E)-((4-methylphenyl)imino)methyl)-2-naphthol is used as a dye to impart a bright red color to fabrics.
Used in Rubber Industry:
1-((E)-((4-methylphenyl)imino)methyl)-2-naphthol is utilized as a dye in the manufacturing of rubber products, enhancing their visual appeal with a distinct red color.
However, it is important to note that due to its classification as a carcinogen and potential mutagen, along with its banned status in food and food packaging in many countries, the use of Sudan Red 7B must be approached with caution and adhere to strict regulations to prevent potential health and environmental risks.

Upstream product

• 50-00-0 formaldehyd 
• 106-49-0 p-toluidine 
• 135-19-3 β-naphthol 
• 708-06-5 2-hydroxynaphthalene-1-carbaldehyde 
• 6638-23-9 1-<(4-Methylphenylamino)methyl>-2-naphthol 
• 6638-95-5 1-(phenylaminomethyl)naphthalen-2-ol 
• 99-99-0 1-methyl-4-nitrobenzene 

Downstream Products

• 64468-31-1 N-(4-Methylphenyl)-3-oxo-3H-naphtho<2,1-b>pyran-2-carboxamid 
• 6638-23-9 1-<(4-Methylphenylamino)methyl>-2-naphthol 
• 132358-01-1 VO(2-hydroxy-1-naphthalidene-4'-methylaniline)2 
• 105236-73-5 Sn(NCS)2(C₆H₄C₄H₂(OH)CHNC₆H₄CH₃)2 
• 105236-75-7 SnBr₂(C₆H₄C₄H₂(OH)CHNC₆H₄CH₃)2 
• 105236-74-6 SnCl₂(C₆H₄C₄H₂(OH)CHNC₆H₄CH₃)2 
• 933984-30-6 bis[1-[(4'-Me-phenylimino)methyl]-2-naphtholato]cobalt(II) complex 
• 143481-58-7 SnCl₄(HOC₁₀H₆CHNC₆H₄CH₃)2 
• 859148-37-1 RuCl₂((C₆H₅)3As)2(C₁₀H₆OCHNC₆H₄CH₃) 
• 859148-38-2 RuBr₂((C₆H₅)3As)2(C₁₀H₆OCHNC₆H₄CH₃) 
• 1075705-75-7 [ReO₃(CH₃)(OC₁₀H₆CHNHC₆H₄CH₃)] 

Relevant academic research and scientific papers

Half-Sandwich Iridium Complexes for the One-Pot Synthesis of Amides: Preparation, Structure, and Diverse Catalytic Activity

Several types of air-stable N,O-coordinate half-sandwich iridium complexes containing Schiff base ligands with the general formula [Cp*IrClL] were synthesized in good yields. These stable iridium complexes displayed a good catalytic efficiency in amide synthesis. A variety of amides with different substituents were obtained in a one-pot procedure with excellent yields and high selectivities through the amidation of aldehydes with NH2OHHCl and nitrile hydration under the catalysis of complexes 1-4. The excellent and diverse catalytic activity, mild conditions, broad substance scope, and environmentally friendly solvent make this system potentially applicable in industrial production. Half-sandwich iridium complexes 1-4 were characterized by NMR, elemental analysis, and IR techniques. Molecular structures of complexes 2 and 3 were confirmed by single-crystal X-ray analysis.

Insight into structural demand for cold crystallization of a small molecule. A case study for schiff base compounds that exhibit prototropic tautomerization

To elucidate the relationship between prototropic tautomerism and the cold crystallization phenomenon, o-hydroxy aryl Schiff base compounds derived from three different toluidine isomers were examined. Comparing their thermal behavior, we confirmed that c

Syntheses, characterization and catalytic activities of half-sandwich ruthenium complexes with naphthalene-based Schiff base ligands

Four ruthenium(II) p-cymene complexes with naphthalene-based Schiff base ligands [Ru(p-cymene)LCl] (2a–2d) have been synthesized and characterized. The half-sandwich ruthenium complexes were characterized by 1H and 13C NMR spectra, elemental analyses, and infrared spectrometry. The molecular structures of 2a, 2b, and 2c were confirmed by single-crystal X-ray diffraction. Furthermore, these half-sandwich ruthenium complexes are highly active catalysts for the hydrogenation of nitroarenes to anilines using NaBH4 as the reducing agent in ethanol at room temperature.

Synthesis, spectroscopic characterization, catalytic and antibacterial studies of ruthenium(III) Schiff base complexes

The bidentate Schiff base ligands (HLn) have been synthesized by condensation of 2-hydroxy-l-naphthaldehyde with aniline and its p-substituted derivatives in ethanol. Ruthenium(III) complexes of the type [Ru(Ln)2(H2O)2]Cl have been synthesized by the reaction of RuCl3·nH2O with the Schiff base ligands (in a molar ratio 1:2) in ethanol. The ligands and their Ru(III) complexes have been characterized by elemental analysis, magnetic susceptibility, spectroscopic (FTIR, UV-vis, 1H NMR and X-ray diffraction) and thermal analysis techniques. All the ruthenium(III) complexes are found to be stable, paramagnetic, low spin and octahedrally coordinated by the ligands through the nitrogen atom of the azomethine (-CN-) group and the oxygen atom of the deprotonated phenolic group. The molecular and electronic structures of the investigated ligands (HLn) were also studied using quantum chemical calculations. The complexes (1, 3 and 5) exhibited a catalytic activity for the oxidation of benzoin to benzil with moderate to high yield in the presence of sodium periodate as co-oxidant. The antibacterial activities of the ligands (HLn) and their Ru(III) complexes towards Gram positive and Gram negative bacteria have been investigated.

Synthesis, characterization and antimicrobial activity of mixed schiff base ligand complexes of Co(II), Ni(II), Cu(II) and Zn(II)

The mixed ligand complexes of Co(II), Ni(II), Cu(II) and Zn(II) with Schiff bases N-(2-hydroxy-1-naphthylidene)-4-methylaniline (L1H) and N-(2-hydroxybenzylidene)-2,3-dimethylaniline (L2H) have been synthesized and characterized. The

Synthesis and Characterization of Dioxouranium(VI) Complexes of Schiff Bases Derived from 2-Hydroxy-1-Naphthaldehyde

A series of 20 new complexes of dioxouranium(VI) with Schiff bases derived from 2-hydroxy-naphthaldehyde with different aromatic amines with the general composition UO2X2*2L (X = Cl, Br, I, NO3 or NCS and L = Schiff bases) were synthesized.They were chara

A General and Practicable Synthesis of Polycyclic Heteroaromatic Compounds. Part 4. A Rationale for the Mechanism of the Synthesis

Studies on aspects of the mechanism of our general synthesis of polycyclic heteroaromatic compounds suggest that the reaction sequence outlined in Scheme 2 is followed.Under the conditions of our synthesis, the ortho-rearrangement (8) --> (9) is preferred to the para-rearrangement which is known to occur in acid conditions.Aniline Mannich bases (29) are converted to benzacridines (30) in an intermolecular reaction.The synthesis appears to be restricted to substrates where the putative intermediate (9) is not part of an amide group.In the course of these studies effective syntheses of the tricyclic compounds (24) and (25) have been discovered.