23879-81-4

Basic information

• Product Name: 1,3,5-Triphenoxybenzene
• Synonyms: 1,3,5-Triphenoxybenzene
• CAS NO: 23879-81-4
• Molecular Formula: C₂₄H₁₈O₃
• Molecular Weight: 354.39792
• EINECS: -0
• Mol File: 23879-81-4.mol

Chemical Properties

• Appearance: /
• CAS DataBase Reference: 1,3,5-Triphenoxybenzene(CAS DataBase Reference)
• NIST Chemistry Reference: 1,3,5-Triphenoxybenzene(23879-81-4)
• EPA Substance Registry System: 1,3,5-Triphenoxybenzene(23879-81-4)

Safety Data

• Hazardous Substances Data: 23879-81-4(Hazardous Substances Data)

Upstream product

• 626-39-1 1,3,5-trisbromobenzene 
• 108-95-2 phenol 
• 100-67-4 potassium phenolate 
• 99-35-4 1,3,5-trinitrobenzene 
• 108-70-3 1,3,5-trichlorobenzene 
• 95765-11-0 {CpNbCl(CO)2}2(μ-Cl)2 
• 4279-76-9 phenoxyacetylene 

Relevant articles and documents

Efficient Ni-catalyzed conversion of phenols protected with 2,4,6-trichloro-1,3,5-triazine (TCT) to olefins

An efficient Ni(COD)2/dppf catalyzed olefination of Ar-O-TCT as synthetic equivalents of aryl halides is described. Activation of C-O bonds in phenols as readily available compounds was achieved with 2,4,6-trichloro-1,3,5-triazine (TCT). This method provides practical access to 1,2-disubstituted olefins in high yields and high functional group compatibility.

Ligand-free copper(I) catalyzed N- and O-arylation of aryl halides

A simple and industrially viable protocol for C-N and C-O coupling is reported here. Arylation of phenol, benzylamine and imidazole with aryl bromides is achieved using ligand-free Cu(I) halide salts in low catalytic amount (2.5 mol %).

Monocyclopentadienyl complexes of niobium(III) and tantalum(III). Structures of [Cp′NbCl(CO)2]2(μ-Cl)2 and Cp′NbCl2(ArCCAr) (Ar = p-tolyl)

The compounds [CpRMCl(μ-Cl)(CO)2]2 (1, R = H (C5H5), 1a, R = Me (C5H4Me), M = Nb; 2, R = H, M = Ta) were prepared by the Al reduction of CpRMCl4 under CO. Internal alkynes displace two CO ligands to give complexes of the type CpM(RCCR)Cl2. Phosphines displace only one CO group and form compounds, e.g., CpNbCl2(CO)(PMe3)2. A tris(phosphine) complex, CpTaCl2(PMe3)2, was prepared by reduction of CpTaCl4 by Na/Hg in the presence of Me3P. Acrylate esters displace CO to give metallacycles, CpNb(CH2CHC(OR)O)Cl2. Likewise, butadiene displaces both carbonyls from Cp*Ta(CO)2Cl2(THF) with the formation of the previously reported tantalacyclopentene, Cp*Ta(CH2CHCHCH2)Cl2 (Cp* = C5Me5). The niobium alkyne adduct Cp′NbCl2(tolan) was also prepared by direct reduction of Cp′NbCl4 with Al in the presence of the alkyne. An EHMO analysis revealed that the alkyne adducts are best viewed as Nb(V) metallacyclopropenes with additional donation of electron density from π⊥ (see A below). The (Matrix Presented) EHMO analysis also explained why the alkyne adducts form stable 16e complexes, whereas phosphines add an additional ligand to form 18e complexes. The structures of 1a and Cp′NbCl2(tolan) (3c) were determined by single-crystal X-ray diffractometry. 1a: a = 7.117 (1) A?, b = 11.902 (2) A?, c = 11.892 (2) A?, β = 101.79 (1)° space group P21/c, Z = 2, V = 986.0 (2) A?3, ρcalcd = 2.01 g/mL, R = 0.027, Rw = 0.038 based on 1965 reflections with I > 3σ(I). 3c: a = 9.793 (3) A?, b = 13.353 (3) A?, c = 15.677 (4) A?, β = 93.15°, space group P21/n, Z = 4, V= 2047 (1) A?3, ρcalcd = 1.46 g/mL, R = 0.037, Rw = 0.036 based on 1999 reflections with I > 3σ(I).