54515-63-8

Basic information

• Product Name: cis,trans,cis-1,2,3,4-tetraphenylcyclobutane
• Synonyms: cis,trans,cis-1,2,3,4-tetraphenylcyclobutane
• CAS NO: 54515-63-8
• Molecular Weight: 360.499
• Mol File: 54515-63-8.mol
• Article Data: 6

Chemical Properties

• CAS DataBase Reference: cis,trans,cis-1,2,3,4-tetraphenylcyclobutane(CAS DataBase Reference)
• NIST Chemistry Reference: cis,trans,cis-1,2,3,4-tetraphenylcyclobutane(54515-63-8)
• EPA Substance Registry System: cis,trans,cis-1,2,3,4-tetraphenylcyclobutane(54515-63-8)

Safety Data

• Hazardous Substances Data: 54515-63-8(Hazardous Substances Data)

Upstream product

• 103-30-0 (E)-1,2-diphenyl-ethene 
• 71-43-2 benzene 
• 91-22-5 quinoline 
• 166824-91-5 4,4',4'',4'''-(cyclobutane-1,2,3,4-tetrayl)tetrabenzoic acid 
• 103-82-2 phenylacetic acid 

Downstream Products

• 103-30-0 (E)-1,2-diphenyl-ethene 
• 59532-48-8 trans-stilbene radical cation 
• 65-85-0 benzoic acid 
• 10516-92-4 1,2,3,4-tetraphenylbutane-1,4-dione 

Relevant articles and documents

Consequences of hydrophobic Association in Photoreactions: Photodimerization of Stilbenes in Water

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Stereoselective Photodimerization of (E)-Stilbenes in Crystalline γ-Cyclodextrin Inclusion Complexes

Solid-state irradiation of the crystalline inclusion complex of (E)-stilbene in γ-cyclodextrin (γ-CD) yields a single isomer of syn-tetraphenylcyclobutane stereoselectively in high yield. In contrast, the photodimerization of stilbene in solution is very inefficient and unselective, and no photodimer is observed even upon prolonged irradiation of pure crystals. The monosubstituted stilbenes form a pair of photodimers stereoselectively, viz. the syn head-to-head and syn head-to-tail isomers, in comparable yields. The photodimer yields of about 70% and the biphasic decay kinetics of the excited stilbene (as established by picosecond time-resolved diffuse-reflectance spectroscopy) indicate that the stilbene guests are located in at least two distinct sites in the γ-CD crystal lattice, i.e., a dimerization site where excited stilbene is in close reach of another stilbene guest molecule and an isomerization site where excited stilbene does not find a close neighbor for dimerization and thus undergoes trans → cis isomerization only.