1246888-62-9

Basic information

• Product Name: 1-bromo-1-phenyl-2-dibenzo[a,d]cycloheptenylidene-ethene
• Synonyms: 1-bromo-1-phenyl-2-dibenzo[a,d]cycloheptenylidene-ethene
• CAS NO: 1246888-62-9
• Molecular Weight: 371.276
• Mol File: 1246888-62-9.mol
• Article Data: 1

Chemical Properties

• CAS DataBase Reference: 1-bromo-1-phenyl-2-dibenzo[a,d]cycloheptenylidene-ethene(CAS DataBase Reference)
• NIST Chemistry Reference: 1-bromo-1-phenyl-2-dibenzo[a,d]cycloheptenylidene-ethene(1246888-62-9)
• EPA Substance Registry System: 1-bromo-1-phenyl-2-dibenzo[a,d]cycloheptenylidene-ethene(1246888-62-9)

Safety Data

• Hazardous Substances Data: 1246888-62-9(Hazardous Substances Data)

Upstream product

• 941716-31-0 5-phenylethynyl-5H-dibenzo[a,d]cyclohepten-5-ol 

Downstream Products

• 1246888-70-9 1-phenyl-3-(dibenzo[a,d]cycloheptenylidene)ethanone 
• 1246888-69-6 Z-5-(2-bromo-2-phenylethenyl)-5H-dibenzo[a,d]cycloheptene 
• 1246888-71-0 2-phenyl-11bH-dibenz[cd,h]azulene 
• 1246888-65-2 1-phenyl-2-dibenzo[a,d]cycloheptylidene-ethene 
• 1246888-68-5 5-phenylethynyl-5H-dibenzo[a,d]cycloheptene 

Relevant articles and documents

Syntheses, X-ray crystal structures and reactivity of fluorenylidene- and dibenzosuberenylidene-allenes: Convenient precursors to dispirotetracenes, di-indenotetracenes and 2-phenyl-11bH-dibenz[cd,h]azulene

3,3-(Biphenyl-2,2′-diyl)-1-α,α,α-trifluoro-p-tolyl- allene, 9, sequentially forms head-to-tail, 12, cis-tail-to-tail, 13, and trans tail-to-tail, 14, 1,2-dialkylidene-cyclobutane dimers, each of which has been characterised by X-ray crystallography. Thermolysis at 180°C yields the dispirotetracene, 15, and di-indenotetracene, 16; the latter compound forms an air-stable Diels-Alder adduct, 17, with N-methylmaleimide. In contrast, the dibenzo[a,d]cycloheptenylidene-allenes, (C14H10)CCC(Br)Ph, 20a, and (C14H10)CCC(H)Ph, 21a, do not dimerise under relatively mild conditions. However, protonation of the bromo-allene, 20a, and subsequent addition of hydride, provide a facile entry to the difficultly accessible bowl-shaped dibenz[cd,h]azulene framework, as in 30, that had not previously been structurally characterised. Among others, the X-ray crystal structures of 12, 13, 14, 17, 20a, 21a and 30 are reported.