81758-49-8

Upstream product

• 34667-97-5 3-methyl-4-phenylcyclobut-3-ene-1,2-dione 

Downstream Products

• 81758-62-5 4-Phenyl-3-(tosylmethyl)cyclobuten-1,2-dion 
• 81758-73-8 trans-2,9-Dihydroxy-3,10-diphenyl-5,11-dithiadispiro<3.2.3.2>dodeca-2,9-dien-1,8-dion 
• 81758-53-4 3-(4-Methoxybenzyl)-4-phenylcyclobuten-1,2-dion 
• 81758-75-0 S-<(3,4-Dioxo-2-phenylcyclobut-1-enyl)methyl>thiouroniumbromid 
• 81797-02-6 N-(Phenyl)thiobenzimidsaeure-<(3,4-dioxo-2-phenylcyclobut-1-enyl)methylester>-hydrobromid 
• 81758-77-2 (Z)-3-<β-Anilinostyryl>-4-phenylcyclobuten-1,2-dion 
• 81758-76-1 (Z)-3-<2-Anilino-1-propenyl>-4-phenylcyclobuten-1,2-dion 
• 81776-93-4 S-<(3,4-Dioxo-2-phenylcyclobut-1-enyl)methyl>-N-(phenyl)thiouroniumbromid 
• 81758-54-5 <(3,4-Dioxo-2-phenylcyclobut-1-enyl)methyl>acetat 
• 81758-58-9 <(3,4-Dioxo-2-phenylcyclobut-1-enyl)methyl>thiocyanat 
• 81776-94-5 N-(Phenyl)thioacetimidsaeure-<(3,4-dioxo-2-phenylcyclobut-1-enyl)methylester>-hydrobromid 
• 81758-67-0 3-<(3,4-Dioxo-2-phenylcyclobut-1-enylthio)methyl>-4-phenylcyclobuten-1,2-dion 
• 81758-65-8 S-<(3,4-Dioxo-2-phenylcyclobut-1-enyl)methyl>thiobenzoat 

Relevant academic research and scientific papers

Reactions of Cyclobutenediones, LXII. - 3-(α-Bromoalkyl)-4-phenylcyclobutene-1,2-diones

Bromination of 3-alkyl-4-phenylcyclobutene-1,2-dione 1a-c leads to the title compounds 2a-c and 4 which react with C, O, and S nucleophiles to yield the substitution products 3a-r, 5a, and 5b.Hydrolysis of the acylal 5a furnishes the ring enlarged structure 7.With hydrogen sulfide 2a, b are converted into the dispiro compounds 9a, b.Reaction of 2a with the thiocarbonyl compounds 11a-d affords the salts 12a-d from which 12c and 12d can be degraded to give the (β-anilinoalkenyl)cyclobutenediones 13a and b.