189238-39-9

Basic information

• Product Name: Benzene, 1,1'-(1,2-ethanediyl)bis[4-methoxy-3,5-dimethyl-
• CAS NO: 189238-39-9
• Molecular Formula: C20H26O2
• Molecular Weight: 298.425
• Mol File: 189238-39-9.mol
• Article Data: 1

Chemical Properties

• CAS DataBase Reference: Benzene, 1,1'-(1,2-ethanediyl)bis[4-methoxy-3,5-dimethyl-(CAS DataBase Reference)
• NIST Chemistry Reference: Benzene, 1,1'-(1,2-ethanediyl)bis[4-methoxy-3,5-dimethyl-(189238-39-9)
• EPA Substance Registry System: Benzene, 1,1'-(1,2-ethanediyl)bis[4-methoxy-3,5-dimethyl-(189238-39-9)

Safety Data

• Hazardous Substances Data: 189238-39-9(Hazardous Substances Data)

Upstream product

• 4397-14-2 4-(hydroxymethyl)-2,6-dimethylphenol 
• 25347-59-5 3,5,3',5'-tetramethyl-stilbene-4,4'-diol 
• 576-26-1 2.6-dimethylphenol 
• 32692-27-6 4-chloromethyl-2,6-dimethyl-anisole 
• 6476-26-2 4,4’-(ethane-1,2-diyl)bis(2,6-dimethylphenol) 
• 77-78-1 dimethyl sulfate 

Relevant articles and documents

Selective Preparation of Polycyclic Aromatic Hydrocarbons. Part 7. A Preparative Route to 10,11-Dihydro-5H-dibenzo-cycloheptenes Using Friedel-Crafts Intramolecular Cyclobenzylation

Cyclobenzylation of 2-hydroxymethyldiphenylethanes 4 and 2,2'-bis(hydroxymethyl)diphenylethanes 13 in the presence of a solid perfluorinated sulfonic acid resin, Nafion-H, as a catalyst results in novel polycyclic aromatic hydrocarbons, dibenzocyclopentenes.Dibenzocyclopentenes were also prepared from diphenylethanes by a benzylation reaction, which incorporates chloromethylation of a hydrocarbon followed by Friedel-Crafts intramolecular cyclization reaction.The present method involving the action of ClCH2OMe and TiCl4 on a variety of diphenylethanes (constructed such that electrophilic substitution occurs ortho to the diphenylethane linkage) offers a convenient, mild one-pot synthesis of substituted dibenzocycloheptenes.The mechanism of these reactions is also discussed.