811-16-5

Upstream product

• 83687-09-6 dimethyl 1,3-diphenylisobenzofuran-5,6-dicarboxylate 
• 83687-07-4 dimethyl 4,5-dibenzoylphthalate 
• 83687-05-2 4,5-dibenzoylphthalic acid 
• 1984-43-6 dimethyl 7-oxabicyclo[2.2.1]hept-5-ene exo,exo-2,3-dicarboxylate 
• 86467-28-9 diphenyl-9,10 tetramethoxy-2,3,6,7 anthracene 
• 762-42-5 dimethyl acetylenedicarboxylate 
• 83687-11-0 tetramethyl 9,10-diphenyl-1,4;9,10-diepoxy-1,2,3,4,4a,9,9a,10-octahydroanthracene-2,3,6,7-tetracarboxylate 

Downstream Products

• 97826-16-9 C₃₀H₁₄O₁₀^(4-)*4K⁽¹⁺⁾ 
• 97860-60-1 9,10-diphenyl-2,3,6,7-tetra(methoxycarbonyl)antracene endoperoxide 
• 83687-18-7 tetrapotassium 9,10-diphenylanthracene-2,3,6,7-tetracarboxylate 

Relevant academic research and scientific papers

ECHANGE DE SUBSTITUANTS EN SERIE ANTHRACENIQUE PAR CYCLO-ADDITIONS SUIVIES D'ELIMINATIONS SPONTANEES; APPLICATION A LA SYNTHESE D'UN CAPTEUR HYDROSOLUBLE D'OXYGENE SINGULET

Condensation of benzaldehyde with veratrole in acidic media affords a one-pot synthesis of 2,3,6,7-tetramethoxy-9,10-diphenylanthracene 1f.The reaction of 1f with dimethyl acetylenedicarboxylate does not yield the expected adduct but leads directly to the tetramethyl 9,10-diphenylanthracene-2,3,6,7-tetracarboxylate 9b and other products, through successive cyclo-additions followed by spontaneous eliminations of dimethoxyacetylene or methoxycarbyne.

A NEW ACCESS TO THE ANTHRACENE CORE. SYNTHESIS OF TWO WATER SOLUBLE SINGLET OXYGEN TRAPS DERIVED FROM 1,3-DIPHENYLISOBENZOFURAN AND 9,10-DIPHENYLANTHRACENE

Two water soluble 1O2 traps: dipotassium 1,3-diphenylisobenzofuran-5,6-dicarboxylate and tetrapotassium 9,10-diphenylanthracene-2,3,6,7-tetracarboxylate have been prepared in good yields and a new access to the anthracene skeleton is described.The key-step of this synthesis consists of a cycloaddition between 1,3-diphenylisobenzofurans and dimethyl 7-oxabicyclo-5-heptene-2,3-dicarboxylate; the adducts thus obtained undergo dehydration to afford the corresponding anthracenes.