65007-16-1

Upstream product

• 23284-94-8 endo-1,8-dimethyl-9,10-diphenyltricyclo<6,2,1,0^2,7>undeca-4,9-diene-3,6,11-trione 
• 26307-17-5 2,5-dimethyl-3,4-diphenylcyclopenta-2,4-dienone 
• 73843-52-4 (3aR,3bS,6aR,7aS)-6a,7a-Dimethyl-1,6-diphenyl-3a,3b,6a,7a-tetrahydro-cyclopenta[a]pentalene-3,4,7-trione 
• 106-51-4 p-benzoquinone 

Downstream Products

• 73843-52-4 6a,7a-Dimethyl-1,6-diphenyl-3a,3b,6a,7a-tetrahydro-cyclopenta[a]pentalene-3,4,7-trione 
• 73843-52-4 (3aR,3bS,6aR,7aS)-6a,7a-Dimethyl-1,6-diphenyl-3a,3b,6a,7a-tetrahydro-cyclopenta[a]pentalene-3,4,7-trione 

Relevant academic research and scientific papers

Photochemistry of Hemicyclone Diels-Alder Adducts of Substituted Benzoquinones

The Diels-Alder reactions between hemicyclone and a number of substituted benzoquinones are reported.Photolysis of the products produces pentacyclo2,6,03,10, 05,9>undecane derivatives and/or 2-oxapentacyclo6,4,0,0

A NOVEL, VERSATILE SYNTHETIC APPROACH TO LINEARLY FUSED TRICYCLOPENTANOIDS via PHOTO-THERMAL OLEFIN METATHESIS

Fifteen examples of a new, speedy and general approach to linearly fused tricyclopentanoids bearing the tricyclo2,6>undecane (triquinane) frame of high contemporary interest is delineated.The key concept in our synthetic sequence to tri

A novel, versatile synthetic approach to linearly fused tricyclopentanoids via photo-thermal olefin metathesis

Fifteen examples of a new, speedy and general approach to linearly fused tricyclopentanoids bearing the tricyclo[6.3.0.02.6]undecane (triquinane) frame of high contemporary interest is delineated. The key concept in our synthetic sequence to triquinanes is the novel photo-thermal olefin metathesis of cheap, abundantly available Diels-Alder adducts of 1,3-cyclopentadienes and p-benzoquinones. Thus, photolysis of endo-tricyclo[6.2.1.02,7]undeca-4,9-dien-3,6-diones (9a-j, 13a,b)furnished pentacyclo[5.4.0.02,6.03,10.05,9]undecan-8,11-diones (10a-j 14a, b), which on thermal fragmentation of the cyclobutane ring gave cis, syn, cis-tricyclo [6.3.0.02,6]undeca-4,9-dien-3,11-diones (11a-j, 15a,b) in just three steps and in exceptionally good yields. A few interesting transformations of the readily available parent bis-enone 11a which indicates its wider uses in syntheses, are described. Finally, a smooth thermal isomerisation of cis, syn, cis-bis-enones to cis, anti, cis-bis-enones is reported, which further enhances the scope and versatility of our synthetic theme.