130840-91-4

Basic information

• Product Name: 3,7-Di-tert-butyl-10,11-dihydro-5H-dibenzo[a,d]cycloheptene
• Synonyms: 3,7-Di-tert-butyl-10,11-dihydro-5H-dibenzo[a,d]cycloheptene
• CAS NO: 130840-91-4
• Molecular Weight: 306.491
• Mol File: 130840-91-4.mol
• Article Data: 1

Chemical Properties

• CAS DataBase Reference: 3,7-Di-tert-butyl-10,11-dihydro-5H-dibenzo[a,d]cycloheptene(CAS DataBase Reference)
• NIST Chemistry Reference: 3,7-Di-tert-butyl-10,11-dihydro-5H-dibenzo[a,d]cycloheptene(130840-91-4)
• EPA Substance Registry System: 3,7-Di-tert-butyl-10,11-dihydro-5H-dibenzo[a,d]cycloheptene(130840-91-4)

Safety Data

• Hazardous Substances Data: 130840-91-4(Hazardous Substances Data)

Upstream product

• 194665-97-9 {5-tert-Butyl-2-[2-(4-tert-butyl-2-hydroxymethyl-phenyl)-ethyl]-phenyl}-methanol 
• 71-43-2 benzene 

Downstream Products

• 833-48-7 dibenzosuberane 
• 253185-03-4 tert-butylbenzene 

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.