3724-52-5

Usage

Uses

Used in Organic Synthesis:
1,2,3,4-Cyclopentanetetracarboxylic acid is used as a key intermediate in the synthesis of various organic compounds, leveraging its reactive carboxylic acid groups for the formation of esters, amides, and other functional groups. Its cyclic structure allows for the creation of complex molecules with specific properties, making it a valuable component in the development of new chemical entities.
Used in Pharmaceutical Industry:
1,2,3,4-Cyclopentanetetracarboxylic acid is used as a starting material or a building block in the synthesis of pharmaceutical compounds, owing to its potential applications in drug discovery and development. Its unique structure can be utilized to design and create novel drug candidates with specific therapeutic targets and improved pharmacological properties.
Used in Materials Science:
1,2,3,4-Cyclopentanetetracarboxylic acid is used as a component in the development of advanced materials, such as polymers, coatings, and composites, due to its ability to form stable cross-linked structures. Its carboxylic acid groups can participate in various chemical reactions, enabling the creation of materials with tailored properties for specific applications.

Upstream product

• 4802-47-5 (+/-)-cyclopentane-1r,2c,3t,4t-tetracarboxylic acid-1,2;3,4-dianhydride 
• 15102-22-4 (+/-)-cyclopentane-1r,2c,3t,4c-tetracarboxylic acid-1,2-anhydride 
• 3724-52-5 (+/-)-cyclopentane-1r,2c,3t,4c-tetracarboxylic acid 
• 3786-91-2 cis,cis,cis,cis-1,2,3,4-cyclopentanetetracarboxylic acid 
• 3724-52-5 cis,cis,cis,cis-cyclopentane-1,2,3,4-tetracarboxylic acid 
• 69432-65-1 trans,cis,trans-1,2,3,4-cyclopentanetetracarboxylic acid 
• 16550-49-5 all-cis-tetra(n-propyl) cyclopentanetetracarboxylate 
• 7647-01-0 hydrogenchloride 
• 1200-88-0 norbornene-5,6-dicarboxylic acid 
• 826-62-0 5-norbornene-2,3-dicarboxylic anhydride 

Downstream Products

• 6053-68-5 1,2,3,4-cyclopentanetetracarboxylic acid dianhydride 
• 3724-52-5 all-trans-cyclopentanetetracarboxylic acid 
• 3724-52-5 cis,cis,cis,cis-cyclopentane-1,2,3,4-tetracarboxylic acid 
• 4802-47-5 (+/-)-cyclopentane-1r,2c,3t,4c-tetracarboxylic acid-1,2;3,4-dianhydride 
• 4802-47-5 (+/-)-cyclopentane-1r,2c,3t,4t-tetracarboxylic acid-1,2;3,4-dianhydride 
• 3724-52-5 (+/-)-cyclopentane-1r,2c,3t,4c-tetracarboxylic acid 

Relevant academic research and scientific papers

A 1, 2, 3, 4 - cyclopentane tetracarboxylic dianhydride of the preparation method (by machine translation)

The invention discloses a 1, 2, 3, 4 - cyclopentane tetracarboxylic dianhydride of the preparation method, the invention belongs to the field of fine chemicals preparation method. The main technical proposal is to maleic anhydride and the cyclopentadiene as the starting material, the low temperature by 1, 4 - addition reaction intermediate of synthesis of 5 - norbornene - 2, 3 - dicarboxylic acid anhydride; through the ozone oxidation, hydrolysis, hydrogen peroxide oxidation reaction to obtain the cyclopentane tetracarboxylic acid; finally to acetic anhydride as the dehydrating agent, the dehydration ring-closure of the synthesized target product 1, 2, 3, 4 - cyclopentane tetracarboxylic dianhydride. The proposal to the traditional process, mild reaction conditions, the product has high purity, high yield, pollution-free and the like, and is suitable for large-scale industrial production. (by machine translation)

CAGE-SHAPED CYCLOPENTANOIC DIANHYDRIDE, METHOD FOR PRODUCTION THEREOF, AND POLYIMIDE

A cage 1,2,3,4-cyclopentanetetracarboxylic acid (1,3:2,4)-dianhydride compound represented by formula [1], and a polyimide obtained by condensing the compound with a diamine. With the compound, it is possible to provide a polyimide which shows no absorption in the ultraviolet region and is highly transparent to light, has high insulating properties, has improved heat resistance and processability, and has excellent solubility in organic solvents. (In formula [1], R1 and R2 each independently represents a hydrogen atom, a halogen atom, or a C1-10 alkyl.)

Optically active phenoxypropionic esters

Optically active compounds of the formula I STR1 where R is C1 -C12 -alkyl or -perfluoroalkyl in which one or two non-adjacent CH2 or CF2 groups can also be replaced by --O-- and/or --CO-- and/or --CO--O-- and/or --CH=CH-- and/or --CH-halogen-- and/or --CHCN-- and/or --0--CO--CH-halogen-- and/or --O--CO--CHCN--, or is C1 -C12 -alkyl which can have a terminal chemically reactive group and in which a CH2 group can be replaced by --O--, A1 and A2 are each, independently of one another, 1,4-phenylene which is unsubstituted or substituted by one or two F and/or Cl and/or Br atoms and/or CH3 groups and/or CN groups and in which one or two CH groups can also be replaced by N, 1,4-cyclohexylene in which one or two non-adjacent CH2 groups can also be replaced by --O-- and/or --S--, 1,4-piperidinediyl, 1,4-bicyclo[2.2.2]octylene, 2,6-naphthalenediyl, decahydro-2,6-naphthalenediyl or 1,2,3,4-tetrahydro-2,6-naphthalenediyl, A3 is unsubstituted or substituted phenyl, Z is --CO--O--, --O--CO--, --CH2 CH2 --, --OCH2 --, --CH2 O--, --C C-- or a single bond and m is 0, 1, 2 or 3.

Process for, respectively, the production and purification of dicarboxylic and polycarboxylic acid anhydrides

A method of preparation and/or purification of acid anhydrides is disclosed. Dicarboxylic or polycarboxylic acids contained in the anhydrides to be treated, are dehydrated in an organic solvent in the presence of activated carbon.