Carboxylation

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carboxylation

[kär‚bäk·sə′lā·shən]
(organic chemistry)
Addition of a carboxyl group into a molecule.

Carboxylation

 

the direct introduction of the carboxyl group —COOH to organic compounds by the action of CO2. For example, carboxylation of organometallic compounds occurs during the passage of CO2 through a solution of the compound; subsequent hydrolysis yields carboxylic acid:

Salicylic acid and ^-aminosalicylic acid (PASA), used in medicine, are obtained through a singular carboxylation process involving the corresponding phenolates, for example

Carboxylation in an organism is effected by specific enzymes, forexample, pyruvate carboxylase catalyzes the carboxylation ofpyruvic acid. Carboxylation plays an important role in the oxida-tion of intermediate products of the decomposition of carbohy-drates, fats, and proteins in the organism.

References in periodicals archive ?
In this study, carboxylated PS microspheres were prepared for use as the diffusion layers of in vitro diagnostic reagents to immobilize some curing reagents, such as phosphocholine.
This research takes an important step towards the replacement of synthetic films with biodegradable films by improving the properties of gluten films by using carboxylated cellulose nanocrystals.
Increased levels of not completely carboxylated osteocalcin are linked to a decrease in BMD and thus to the development of osteoporosis.
Abstract The potentiometric titration of carboxylated methyl methacrylate latexes prepared with varying amounts of methacrylic acid showed that only very small amounts of their total acids copolymerized were neutralized at room temperature until the acid level was well above 10%.
If the bore walls are rough and pitted enough to abrade resistance, like carboxylated versions of high-acrylonitrile butadiene copolymer (XNBR).
In this pathway the naphthalene is carboxylated to 2-NA followed by a series of reduction steps where hydrogen is added to the unsubstituted ring first and then to the ring with the carboxyl group.
Parker Hannifin's Seal Group) is offering sealing products in carboxylated HNBR (XHNBR) a material that combines the temperature resistance of highly saturated nitrile (XNBR) with the durability of carboxylated nitrile (HNBR).
In addition, assay 9 is relatively specific to the carboxylated form of hOC.
The compatibilizing efficiency of this carboxylated PP is compared to that of maleic anhydride grafted PP.
The "GenFlo" product line features various chemistries that include carboxylated, non-carboxylated and carboxy-modified latices providing a wide range of hand properties from very soft to stiff.
The company helps customers choose from its extensive formulation library which currently includes perfluoroelastomer (FFKM), fluoroelastomer (FKM), polyacrylate (ACM), Vamac (AEM), hydrogenated nitrile (HNBR), carboxylated nitrile (XNBR), nitrile (NBR), ethylene propylene (EPDM), epichlorohydrin (ECO), natural rubber, polyisoprene rubber (IR), styrene butadiene (SBR) and polychloroprene (CR).
A low serum carboxylated osteocalcin level or high undercarboxylated osteocalcin level could be risk factors for femoral neck fracture.