56207-34-2

Basic information

• Product Name: 4,4'-[methylenebis(oxy)]bisanisole
• Synonyms: 4,4'-[methylenebis(oxy)]bisanisole;1,1'-(Methylenebisoxy)bis(4-methoxybenzene);1,1'-Methylenebis(oxy)bis(4-methoxybenzene);4,4'-(Methylenebisoxy)bis(1-methoxybenzene);Bis(4-methoxyphenoxy)methane
• CAS NO: 56207-34-2
• Molecular Formula: C₁₅H₁₆O₄
• Molecular Weight: 260.28514
• EINECS: 260-052-7
• Mol File: 56207-34-2.mol

Chemical Properties

• Boiling Point: 408.7°Cat760mmHg
• Flash Point: 152.3°C
• Appearance: /
• Density: 1.132g/cm³
• CAS DataBase Reference: 4,4'-[methylenebis(oxy)]bisanisole(CAS DataBase Reference)
• NIST Chemistry Reference: 4,4'-[methylenebis(oxy)]bisanisole(56207-34-2)
• EPA Substance Registry System: 4,4'-[methylenebis(oxy)]bisanisole(56207-34-2)

Safety Data

• Hazardous Substances Data: 56207-34-2(Hazardous Substances Data)

Upstream product

• 20757-83-9 [1,3,5,7,2,6]tetroxadithiocane 2,2,6,6-tetraoxide 
• 150-76-5 4-methoxy-phenol 
• 75-11-6 diiodomethane 
• 1122-95-8 sodium 4-methoxyphenolate 
• 75-09-2 dichloromethane 
• 920-66-1 1,1,1,3',3',3'-hexafluoro-propanol 

Relevant articles and documents

Room-temperature ionic liquid-promoted Williamson's synthesis of ethers: A facile synthesis of diaryloxymethanes

A simple and efficient method has been developed for the synthesis of phenolic ethers using room-temperature ionic liquid, not only as solvent but also as promoter. Ionic liquid was recycled and subsequently reused without any loss of the product. Copyright Taylor & Francis, Inc.

Aryloxy Radicals from Diaryloxydiazirines: α-Cleavage of Diaryloxycarbenes or Excited Diazirines?

(Equation presented) The synthesis of diaryloxydiazirines, precursors to diaryloxycarbenes, is described. Thermolyses of the diazirines afford anticipated carbene products, but photolyses afford both carbenes and aryloxy radicals by α-scission. UV spectra of the carbenes and radicals are observed.

Practical synthesis of diaryloxymethanes

Diaryloxymethanes were prepared by treating phenols with sodium hydride and dichloromethane in N-methyl-pyrrolidinone (NMP) at 40°C.

Practical synthesis of diaryloxymethanes

Diaryloxymethanes were prepared by treating phenols with sodium hydride and dichloromethane in N-methyl-pyrrolidinone (NMP) at 40°C.

Influence of cyclodextrins on the fluorescence of some short and long chain linked flexible bisbenzenes in aqueous solution

The UV absorption, induced circular dichroism (icd) spectra, steady state and time resolved fluorescence emission of the flexible bisbenzenes 1-4 were obtained in aqueous solution and in presence of α-, β-, and γ-cyclodextrin (CD). Bisbenzenes 1 and 2 in an aqueous environment exhibit a dual emission which is differently affected by the CDs. The long-wavelength emission is quenched by α- and β-CD and enhanced by γ-CD. This is due to the formation of inclusion complexes between the CDs and 1 (2) in the ground state, in agreement with the modifications of the UV spectrum and the appearance of icd signals. On the basis of these effects and of the influence of the CDs on the 1 and 2 lifetimes, the dual emission of these bisbenzenes is attributed to a set of different ground-state conformations.

From p-Dimethoxybenzene toward Crown Benzenophanes: 1,3,10,14-Tetraoxaparacyclophane

The title compound tetraoxaparacyclophane (6) has been prepared and studied in order to investigate the evolution of spectroscopic properties in going from the monomer unit p-dimethoxybenzene (9) via the noncyclic bichromophoric reference compound 3b to 6.The X-ray structural analysis of 6 shows that the distance between the two aromatic carbon atoms linked to the smaller bridge is shorter than the van der Waals distance.The resulting electronic interaction is reflected by the perturbation of the UV spectrum of 6 (in particular by a distinct hypochromic effect) and in its charge-transfer complexes with TCNE and TCNQ, as compared to 9 and 3b.The fluorescence quantum yields show significant quenching as compared to 9.This process is related to the formation of a new, structureless red-shifted band with a maximum at 26670 cm-1, comparable to that of the excimer of 9.From a Stern-Volmer plot the self-quenching rate constant of the latter, kq ca. 1.2 x 1E9 mol-1s-1 is derived.

POLYMER SUPPORTED REAGENTS: AN EFFICIENT METHOD FOR THE SYNTHESIS OF DIARYLOXYMETHANES

Diaryloxymethanes were synthesized in high yield and in high purity by the treatment of polymer supported phenoxide ions with dichloromethane.

Kinetics of Reaction between Methylene Iodide and Phenoxide Ion

The kinetics of reaction between methylene iodide and phenoxide ion have been studied in 50 percent (v/v) aq.DMSO, aq.DMF and aq. acetone.The activation parameters for the reaction have been determined in aq.DMSO.The reactivity pattern has been rationalized in the light of Hammett's linear free energy relationship.The reaction essentially involves attack on the oxygen atom of phenoxide ion.The validity of the isokinetic relationship has been examined using Exner's method.