181135-51-3

Upstream product

• 787-07-5 diethyl 1,4-cyclohexanedione-2,5-dicarboxylate 
• 5870-38-2 diethyl 2,5-(dihydroxy)terephthalate 
• 63267-02-7 diethyl 2,5-dibromo-3,6-dioxocyclohexa-1,4-diene-1,4-dicarboxylate 

Downstream Products

• 63267-02-7 diethyl 2,5-dibromo-3,6-dioxocyclohexa-1,4-diene-1,4-dicarboxylate 
• 860593-27-7 6,13-di-p-toluidino-chromeno[2,3-b]xanthene-7,14-dione 
• 861078-98-0 6,13-dianilino-chromeno[2,3-b]xanthene-7,14-dione 
• 854869-06-0 1,4-dihydroxy-9-oxo-2-phenoxy-xanthene-3-carboxylic acid 
• 856055-34-0 2,5-dihydroxy-3,6-bis-(2'-hydroxy-biphenyl-2-yloxy)-terephthalic acid diethyl ester 
• 856057-74-4 2,5-dihydroxy-3,6-bis-(4'-hydroxy-biphenyl-4-yloxy)-terephthalic acid diethyl ester 
• 856055-35-1 2,5-dihydroxy-3,6-bis-(2'-hydroxy-biphenyl-2-yloxy)-terephthalic acid 
• 856055-33-9 2,5-dihydroxy-3,6-bis-(4'-hydroxy-biphenyl-4-yloxy)-terephthalic acid 
• 856057-72-2 2,5-bis-biphenyl-4-yloxy-3,6-dihydroxy-terephthalic acid diethyl ester 
• 856055-79-3 2,5-bis-biphenyl-4-yloxy-3,6-dihydroxy-terephthalic acid 

Relevant academic research and scientific papers

Synthesis of Tetraoxygenated Terephthalates via a Dichloroquinone Route: Characterization of Cross-Conjugated Liebermann Betaine Intermediates

Cross-conjugated quinoid betaines 4 (2,5-bis(alkoxycarbonyl)-3,6-dioxo-4-(1-pyridinium-1-yl)cyclohexa-1,4-dien-1-olates; Liebermann betaines) were synthesized from 2,5-dichloro-3,6-dioxocyclohexa-1,4-diene-1,4-dicarboxylates (2) and pyridines in acetone c