90884-17-6

Basic information

• Product Name: Phenol, 2,2'-[1,2-phenylenebis(iminomethylene)]bis-
• CAS NO: 90884-17-6
• Molecular Formula: C20H20N2O2
• Molecular Weight: 320.391
• Mol File: 90884-17-6.mol
• Article Data: 10

Chemical Properties

• CAS DataBase Reference: Phenol, 2,2'-[1,2-phenylenebis(iminomethylene)]bis-(CAS DataBase Reference)
• NIST Chemistry Reference: Phenol, 2,2'-[1,2-phenylenebis(iminomethylene)]bis-(90884-17-6)
• EPA Substance Registry System: Phenol, 2,2'-[1,2-phenylenebis(iminomethylene)]bis-(90884-17-6)

Safety Data

• Hazardous Substances Data: 90884-17-6(Hazardous Substances Data)

Upstream product

• 95-54-5 1,2-diamino-benzene 
• 3946-91-6 (E)-N,N'-bis(salicylidene)-1,2-phenylenediamine 
• 90-02-8 salicylaldehyde 
• 3946-91-6 N,N'-bis(salicylidene)-o-phenylenediamine 
• 89-95-2 2-methyl-benzyl alcohol 

Downstream Products

• 39836-45-8 N,N'-(o-phenylene)bis(salicylideneiminato)cobalt(II) 
• 1006598-82-8 Cu(N,N'-di(2-hydroxybenzyl)o-phenylenediamine^(2-))*H₂O 
• 85573-12-2 1-(2-hydroxybenzyl)-2-(2-hydroxyphenyl)-1H-1,3-benzimidazole 
• 180402-58-8 [Mn(N,N'-o-phenylenebis(salicylideneiminato)(OAc)] 

Relevant articles and documents

1,2-Disubstituted Benzimidazoles by the Iron Catalyzed Cross-Dehydrogenative Coupling of Isomeric o-Phenylenediamine Substrates

Benzimidazoles are common in nature, medicines, and materials. Numerous strategies for preparing 2-arylbenzimidazoles exist. In this work, 1,2-disubstituted benzimidazoles were prepared from various mono- and disubstituted ortho-phenylenediamines (OPD) by iron-catalyzed oxidative coupling. Specifically, O2 and FeCl3·6H2O catalyzed the cross-dehydrogenative coupling and aromatization of diarylmethyl and dialkyl benzimidazole precursors. N,N′-Disubstituted-OPD substrates were significantly more reactive than their N,N-disubstituted isomers, which appears to be relative to their propensity for complexation and charge transfer with Fe3+. The reaction also converted N-monosubstituted OPD substrates to 2-substituted benzimidazoles; however, electron-poor substrates produce 1,2-disubstituted benzimidazoles by intermolecular imino-transfer. Kinetic, reagent, and spectroscopic (UV-vis and EPR) studies suggest a mechanism involving metal-substrate complexation, charge transfer, and aerobic turnover, involving high-valent Fe(IV) intermediates. Overall, comparative strategies for the relatively sustainable and efficient synthesis of 1,2-disubstituted benzimidazoles are demonstrated.

Dioxovanadium(V) complexes of Schiff and tetrahydro-Schiff bases encapsulated in zeolite-Y for the aerobic oxidation of styrene

A series of dioxovanadium(V) complexes of Schiff and tetrahydro-Schiff bases were encapsulated into the supercages of zeolite-Y and were characterized by X-ray diffraction, SEM, N2 adsorption/desorption, FT-IR, UV-vis spectroscopy, ICPAES, pair distribution function (PDF) and X-ray absorption near edge structure (XANES) measurements. The encapsulation is achieved by a flexible ligand method in which the transition metal cations were first ion-exchanged into zeolite-Y and then complexed with ligands. The dioxovanadium-exchanged zeolite, dioxovanadium complexes encapsulated in zeolite-Y plus non-encapsulated homogeneous counterparts were all screened as catalysts for the aerobic oxidation of styrene under mild conditions. It was found that the encapsulated complexes showed better activity than their respective nonencapsulated counterparts in most cases. All encapsulated dioxovanadium tetrahydro-Schiff base complexes showed much higher activity in aerobic oxidation of styrene than their corresponding Schiff base complexes.

Coordination ability of free or silica immobilized Schiff bases towards Hg(II), Cd(II) and Pb(II) ions

A series of ligands, consisting of Schiff bases and their reduced amine derivatives, was prepared by [2+1] condensation of 3-methoxy (or 3-ethoxy)-2-hydroxybenzaldehyde or 2-hydroxybenzaldehyde with 3,4-diaminobenzoic acid or 1,2-diaminobenzene, and by su