671210-48-3

Basic information

• Product Name: Phenol, 2,2'-(1,2-dihydro-2,3-quinoxalinediyl)bis-
• CAS NO: 671210-48-3
• Molecular Formula: C20H16N2O2
• Molecular Weight: 316.359
• Mol File: 671210-48-3.mol
• Article Data: 5

Chemical Properties

• CAS DataBase Reference: Phenol, 2,2'-(1,2-dihydro-2,3-quinoxalinediyl)bis-(CAS DataBase Reference)
• NIST Chemistry Reference: Phenol, 2,2'-(1,2-dihydro-2,3-quinoxalinediyl)bis-(671210-48-3)
• EPA Substance Registry System: Phenol, 2,2'-(1,2-dihydro-2,3-quinoxalinediyl)bis-(671210-48-3)

Safety Data

• Hazardous Substances Data: 671210-48-3(Hazardous Substances Data)

Upstream product

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

Relevant articles and documents

Highly Selective and Sensitive Colorimetric and Fluorescent Chemosensors for Rapid Detection of Cyanide Anions in Aqueous Medium: Investigation on Supramolecular Recognition of Tweezer?shaped Salophenes

Three tweezer?shaped salophenes having catechols (1), phenols (2) and anisoles (3) units in conjunction to the dipodal Schiff bases have been applied for the optical sensing of cyanide (CNˉ) ions in CH3CN-H2O (7:3) as solvent of choi

Synergistic effect of copper nanocrystals-nanoparticles incorporated in a porous organic polymer for the Ullmann C-O coupling r–eaction

A quinoxaline-based porous organic polymer (Q-POP) as a mesoporous organic copolymer was developed as a new platform for the immobilization of CuNPs and copper nanocrystals. The prepared materials were characterized by FT-IR, XRD, N2 adsorption-desorption isotherms, ICP, TGA, SEM, HR-TEM, EDX, and single-crystal X-ray crystallography. The obtained catalyst presented extraordinary catalytic activity towards Ullmann C–O coupling reactions with high surface area, hierarchical porosity, and excellent thermal and chemical stability. Due to its high porosity, and synergistic effect of copper nanocrystals incorporated in the polymer composite, the as-synthesized catalyst was successfully utilized for the Ullmann C–O coupling reaction of phenols and different aryl halides to prepare various diaryl ether derivatives. All types of aryl halides (except aryl fluorides) were screened in the Ullmann C–O coupling reaction with phenols to produce diaryl ethers in good to excellent yields (70–97 %), and it was found that aryl iodides have the best results. Besides, due to the strong interactions between CuNPs, N, and O-atoms of quinoxaline moiety existing in the polymeric framework, the copper leaching from the support was not observed. Furthermore, the catalyst was recycled and reused for five consecutive runs without significant activity loss.

Cyanide-Catalyzed Cyclizations via Aldimine Coupling

Aldimine coupling (AIC) is the nitrogen analogue of the benzoin condensation and has been applied to dialdimines, providing the first examples of cyclizations effected by cyanide-catalyzed AIC. Sodium cyanide promoted the facile, intramolecular cyclization of several dialdimines in N,N-dimethylformamide, methanol, or methylene chloride/water (phase-transfer conditions) yielding a variety of six-membered heterocycles. Under aerobic conditions, an oxidative cyclization occurs to provide the diimine heterocycle. Oligomerization was observed with rigid dialdimines for which cyclization was precluded.