2449-35-6

Usage

Uses

Used in Polymer Industry:
4,4'-SULFONYLDIBENZOIC ACID is used as a monomer for the production of sulfone-containing polyesters. The application reason is its ability to undergo direct polycondensation, which allows for the creation of high-performance polymers with enhanced properties such as thermal stability, mechanical strength, and chemical resistance.
In the specific case of sulfone-containing polyesters, 4,4'-SULFONYLDIBENZOIC ACID is used to enhance the polymer's properties, making it suitable for various applications, including but not limited to, automotive components, electronic device housings, and other industrial uses where materials with improved durability and performance are required.

Upstream product

• 599-66-6 bis(4-methylphenyl) sulfone 
• 5184-66-7 p-ethylphenyl p-tolyl sulfone 
• 4542-76-1 1-(4-(bromomethyl)phenylsulfonyl)-4-(bromomethyl)benzene 
• 64-19-7 acetic acid 
• 66-38-6 4,4'-sulfonylbisbenzaldehyde 
• 201230-82-2 carbon monoxide 
• 80-07-9 4,4'-dichlorodiphenyl sulphone 
• 108-88-3 toluene 
• 3965-53-5 4,4'-dicarbomethoxydiphenyl sulfone 

Downstream Products

• 111088-75-6 4,4'-sulfonyl-di-benzoic acid bis-(2-ethoxy-ethyl ester) 
• 47424-13-5 p,p'-dicarbethoxydiphenyl sulphone 
• 1242188-85-7 N,N'-[4,4'-sulfonylbis(benzoyl)]-bis{4,4'-(p-fluorobenzyl)-1,2-dihydroisoquinaldonitrile} 
• 1242188-88-0 p-{1-[4-(p-fluorobenzyl)isoquinolyl]carbonyl}diphenyl sulfone 

Relevant academic research and scientific papers

Synthesis of heterocyclic monomers via Reissert chemistry

The chemistry of Reissert compounds has been used to synthesize activated difluorotetraketone monomers containing two coupled isoquinolyl moieties, linked at either the 1,1'-or 4,4'-positions. These monomers offer routes to novel families of poly(heteroarylene ether)s. New 4,4'-coupled bis(Reissert compound) 9 containing 4,4'-diketo moieties failed to afford the desired difluorotetraketo monomer upon attempted rearrangement. However, analogous bis(Reissert compound) 19 containing 4,4'-dibenzyl units did so, via aldehyde condensation, hydrolysis of the intermediate ester and oxidation of the four benzylic moieties to keto groups; thus the novel difluorotetraketone monomer 10 was prepared. Novel bis(Reissert compound)s 24, 28, and 35 were synthesized from diacid chlorides and 4-(pfluorobenzyl)isoquinoline. Rearrangement of 24 to the diketone 29, followed by oxidation of the 4-benzyl moieties resulted in difluorotetraketone monomer 30 containing a 1,1'-linked bisisoquinoline. The 1,1'-linked bis(isoquinolylfluorodiketo) monomer 38, isomeric with 10, was prepared from 4-(p-fluorobenzyl) Reissert compound 36 by condensation with terephthaldehyde, ester hydrolysis to diol 37, and oxidation. In the course of this effort, a number of new isoquinoline Reissert compounds were synthesized as model systems.

Synthesis of aromatic carboxylic acids by carbonylation of aryl halides in the presence of epoxide-modified cobalt carbonyls as catalysts

A new procedure was developed for synthesis of aromatic and heteroaromatic acids and their derivatives (esters, salts) by carbonylation of the corresponding aryl halides. The acids are selectively formed in a high yield under very mild conditions. Highly active catalytic systems, base-containing alcoholic solutions of cobalt carbonyl modified with epoxides, were used to activate aryl halides. 2005 Pleiades Publishing, Inc.