53487-12-0

Upstream product

• 27318-42-9 Diphenyl-di-p-methoxyphenyl-bicyclo[3.1.0]hexenol 
• 4452-11-3 1,2-diphenylprop-2-en-1-one 
• 120-44-5 1,4-di(4-methoxyphenyl)ethanone 
• 119-52-8 4,4'-dimethoxybenzoin 

Downstream Products

• 92085-52-4 (5Z,7Z,9Z)-(1S,4R,4aR,10aS)-1,2,3,4,11,11-Hexachloro-6,7-bis-(4-methoxy-phenyl)-8,9-diphenyl-1,4,4a,10a-tetrahydro-1,4-methano-benzocyclooctene 
• 23923-24-2 2,3-bis-(p-methoxyphenyl)-4,5-diphenylcyclopenta-2,4-dienone 

Relevant academic research and scientific papers

Synthesis and Rearrangement of Alkylaryl- and Aryl-substituted Dihydrosemibullvalenes by Thermolysis of 7,8-Fused Cyclo-octa-1,3,5-triene Derivatives

The thermal cycloaddition of a cyclobuteno-dienophile (1) with cyclopentadienones has been systematically investigated; the stereoisomeric adducts give convenient access by decarbonylation to a variety of tetra-aryl, methyltriphenyl-, triphenyl-, tri-t-butyl-, and dimethyldiphenyl-cyclo-octa-1,3,5-triene derivatives as the products of electrocyclic ring-opening of the valence-tautomeric primary products of cheletropic bridge-extrusion, viz. bicyclooctadienes.These compounds provide useful models for investigation of equilibria between the electrocyclic valence tautomers, the scope and mechanism for thermal cross-cyclisations in, for example, unsymmetrically substituted cyclooctatrienes, and the thermal vinyl-cyclopropane (1,3-allylic shift) isomerisation and/or H-atom transfer disproportionation of the resulting arylated and alkylaryldihydrosemibullvalenes.The results best accord with diradical pathways for cyclo-octatriene-dihydrosemibullvalene conversions and subsequent rearrangements.Usefull 13C and 1H n.m.r. structure correlations and new examples of cyclopentadienones are also reported.