7509-20-8

Basic information

• Product Name: 1,3,5-Tris(4-methoxyphenyl)benzene
• Synonyms: 1,3,5-TRIS(4-METHOXYPHENYL)BENZENE;1,3,5-Tris(4-methoxyphenyl)benzene,99%
• CAS NO: 7509-20-8
• Molecular Formula: C₂₇H₂₄O₃
• Molecular Weight: 396.48
• Product Categories: Stains and Dyes;Stains&Dyes, A to;T-U-V
• Mol File: 7509-20-8.mol
• Article Data: 11

Chemical Properties

• Melting Point: 143-146 °C(lit.)
• Boiling Point: 480.17°C (rough estimate)
• Flash Point: 191 °C
• Appearance: brown-yellow crystalline powder
• Density: 1.0800 (rough estimate)
• Vapor Pressure: 1E-11mmHg at 25°C
• Refractive Index: 1.5460 (estimate)
• CAS DataBase Reference: 1,3,5-Tris(4-methoxyphenyl)benzene(CAS DataBase Reference)
• NIST Chemistry Reference: 1,3,5-Tris(4-methoxyphenyl)benzene(7509-20-8)
• EPA Substance Registry System: 1,3,5-Tris(4-methoxyphenyl)benzene(7509-20-8)

Safety Data

• Safety Statements: 24/25
• WGK Germany: 3
• Hazardous Substances Data: 7509-20-8(Hazardous Substances Data)

Usage

Chemical Properties

brown-yellow crystalline powder

InChI:InChI=1/C27H24O3/c1-28-25-10-4-19(5-11-25)22-16-23(20-6-12-26(29-2)13-7-20)18-24(17-22)21-8-14-27(30-3)15-9-21/h4-18H,1-3H3

Upstream product

• 768-60-5 4-methoxyphenylacetylen 
• 100-06-1 1-(4-methoxyphenyl)ethanone 
• 529-34-0 3,4-dihydronaphthalene-1(2H)-one 
• 95-54-5 1,2-diamino-benzene 

Downstream Products

• 15797-52-1 1,3,5-tris(4-hydroxyphenyl)benzene 
• 6297-08-1 1,3,5-tricyclohexyl-cyclohexane 
• 1267551-00-7 C₃₆H₂₄Cl₃N₉O₆ 
• 1267551-14-3 1,3,5-tri(4-(4-butyloxy-6-chloro-1,3,5-triazin-2-yl)oxyphenyl)benzene 
• 1267551-15-4 C₄₂H₃₀Cl₃N₉O₆ 
• 1267551-26-7 C₄₅H₃₆Cl₃N₉O₁₂ 
• 1267550-98-0 C₃₃H₁₅Cl₆N₉O₃ 

Relevant articles and documents

Solvent-dependent metal-free chemoselective synthesis of benzimidazoles and 1,3,5-triarylbenzenes from 2-amino anilines and aryl alkyl ketones catalyzed by I2

A solvent-dependent I2-catalyzed chemoselective reaction was developed for the synthesis of benzimidazoles and 1,3,5-triarylbenzenes via the annulation of 2-amino anilines and aryl alkyl ketones or the cyclization of aryl alkyl ketones, respectively. With 1,4-dioxane as the solvent, sequential C[sbnd]N bond formation followed by C(CO)-C(CH3) bond cleavage leads to the formation of benzimidazoles in a highly selective manner while aldol-type self-condensation of aryl alkyl ketones predominates using PhNO2 or PhCl as the solvent to afford 1,3,5-triarylbenzenes.

A ruthenium-based catalytic system with switchable selectivity between cyclotrimerization and enyne metathesis/Diels-Alder reactions of terminal alkynes

In this study, we report a practical catalytic system, [RuCl 2(p-cymene)]2/IPr (IPr: 1,3-bis(2,6 diisopropylphenyl) imidazol-2-ylidene), that can switch between cyclotrimerization and cross enyne metathesis. The cyclotrimerization reaction of phenylacetylene catalyzed by [RuCl2(p-cymene)]2 can be switched to enyne metathesis by the introduction of a sterically hindered N-heterocyclic carbene. The 1,3-diene formed during this reaction reacts with dienophiles to form the Diels-Alder adduct. A practical one-pot synthesis method, utilizing enyne metathesis/Diels-Alder reactions, was used to construct cyclic compounds in an efficient manner.

Palladium-catalyzed acylation and/or homo-coupling of aryl- and alkyl-acetylenes

Allyl or benzyl halides, through a Pd(0)-catalyzed reaction and under CO pressure, generate acyl-palladium/halides that, in the presence of a base and an aryl- and alkyl-acetylene, undergo nucleophilic acyl substitution giving conjugated acetylenic ketones. Diynes, resulting from alkyne/alkyne homo-coupling, were instead the main products in reactions performed without allyl or benzyl halides. Moreover, dimerization, trimerization, and cyclotrimerization reactions of acetylenes were observed in reaction carried out even without base.