34454-33-6

Upstream product

• 67-56-1 methanol 
• 7425-84-5 4,4-(isopropylidene)-bis(benzoicacid) 
• 1675-70-3 2,2-bis(4-cyanophenyl)propane 
• 16873-39-5 2,2-bis-(4-acetyl-phenyl)-propane 
• 108-88-3 toluene 
• 1195-32-0 1-methyl-4-isopropenylbenzene 
• 19855-84-6 2,2-Bis-(4-chlorocarbonylphenyl)-propane 
• 1823-31-0 4,4'-(propane-2,2-diyl)bis(methylbenzene) 
• 778-22-3 2,2-diphenylpropane 

Downstream Products

• 84619-78-3 (propane-2,2-diylbis(4,1-phenylene))dimethanol 

Relevant academic research and scientific papers

Process for the preparation of aromatic dicarboxylic acids and aromatic hydrocarbons

Aromatic dicarboxylic acids of the formula STR1 in which R1, R2, m, n, and X have the meaning mentioned in the description, can be prepared from the bisphenols, on which they are based, of the formula STR2 if the bisphenols are first reacted to give the bissulphonates, the sulphonate groups are removed catalytically with H2 and the hydrocarbons obtained in this way are doubly acylated in a known manner and the acyl groups are oxidized to the carboxyl groups. Many of the aromatic dicarboxylic acids which can be prepared in this way are new.