17261-24-4

Basic information

• Product Name: 5-phenylindeno<2,1-a>indene
• Synonyms: 5-phenylindeno<2,1-a>indene
• CAS NO: 17261-24-4
• Molecular Weight: 278.353
• Mol File: 17261-24-4.mol
• Article Data: 6

Chemical Properties

• CAS DataBase Reference: 5-phenylindeno<2,1-a>indene(CAS DataBase Reference)
• NIST Chemistry Reference: 5-phenylindeno<2,1-a>indene(17261-24-4)
• EPA Substance Registry System: 5-phenylindeno<2,1-a>indene(17261-24-4)

Safety Data

• Hazardous Substances Data: 17261-24-4(Hazardous Substances Data)

Upstream product

• 18629-95-3 5,10-Dihydroxy-5-phenyl-4b,5,9b,10-tetrahydro-indeno<2,1-a>inden 
• 14447-02-0 dipropyl acetylenedicarboxylate 
• 13203-60-6 1,2-bis(2-phenylethynyl)benzene 
• 18629-95-3 (4bS,9bS)-5-Phenyl-4b,5,9b,10-tetrahydro-indeno[2,1-a]indene-5,10-diol 
• 762-42-5 dimethyl acetylenedicarboxylate 
• 762-21-0 acetylenedicarboxylic acid diethyl ester 
• 18629-94-2 10-hydroxy-10-phenyl-9b,10-dihydroindeno<2,1-a>inden-5<4bH>-one 
• 50703-54-3 4b,9b-dihydro-indeno[2,1-a]indene-5,10-dione 
• 27164-48-3 1,2-distyrylbenzenen 
• 18629-93-1 1,2-Bis-<1,2-dibrom-2-phenyl-aethyl>-benzol 
• 18629-94-2 10-Oxo-5-hydroxy-5-phenyl-4b,5,9b,10-tetrahydro-indeno<2.1-a>inden 
• 1109-15-5 tris(pentafluorophenyl)borate 
• 536-74-3 phenylacetylene 
• 271-58-9 anthranil 

Downstream Products

• 23116-48-5 5-Chloro-10-phenylindeno<2,1-a>indene 
• 23116-49-6 5-Bromo-10-phenylindeno<2,1-a>indene 
• 23116-50-9 5,10-Dichlor-5-phenyl-5,10-dihydro-indeno<2.1-a>inden 
• 23116-52-1 5,5'-Diphenyl-bi--indenyl-(10,10')> 
• 23116-51-0 5,10-Dibrom-5-phenyl-5,10-dihydro-indeno<2.1-a>inden 
• 123765-09-3 5-phenyl-5,10-dihydroindeno<2,1-a>indene 
• 1687-94-1 5,10-diphenyldibenzopentalene 
• 23181-54-6 5.5'-Diphenyl-bi-<5.5a.10.10a-tetrahydro-indeno<2.1-a>indenyliden-(10.10')> 

Relevant articles and documents

Alumina-Mediated π-Activation of Alkynes

The ability to induce powerful atom-economic transformation of alkynes is the key feature of carbophilic π-Lewis acids such as gold- and platinum-based catalysts. The unique catalytic activity of these compounds in electrophilic activations of alkynes is explained through relativistic effects, enabling efficient orbital overlapping with π-systems. For this reason, it is believed that noble metals are indispensable components in the catalysis of such reactions. In this study, we report that thermally activated γ-Al2O3activates enynes, diynes, and arene-ynes in a manner enabling reactions that were typically assigned to the softest π-Lewis acids, while some were known to be triggered exclusively by gold catalysts. We demonstrate the scope of these transformations and suggest a qualitative explanation of this phenomenon based on the Dewar-Chatt-Duncanson model confirmed by density functional theory calculations.

On the Gold-Catalyzed Generation of Vinyl Cations from 1,5-Diynes

Conjugated 1,5-diynes bearing two aromatic units at the alkyne termini were converted in the presence of a gold catalyst. Under mild conditions, aryl-substituted dibenzopentalenes were generated. Calculations predict that aurated vinyl cations are key intermediates of the reaction. A bidirectional approach provided selective access to the angular annulated product in high yield, which was explained by calculations.

Some Unusual Reactions of 1,2-Bis(phenylethynyl)benzene with Sulfur, Carbon Monoxide and Alkyl Acetylenedicarboxyaltes

1,2-Bis(phenylethynyl)benzene (1) reacts with sulfur, carbon monoxide, and acetylenedicarboxylic esters to give unusual polycyclic products.Under exclusion of air 1 adds sulfur to give 6-phenylbenzindenothiopyran (3b) and bis(6-phenylbenzinde