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 ?
Polypropylene has been carboxylated with an asymmetric functional peroxide via reactive extrusion, and this carboxylate f-PP has been evaluated as a third component compatibilizing agent in PP/PA-6,6 (80/20) blends.
Biphenyl core 13 having carboxylate, methoxy and nitro functional groups at 2(2?
The positive absorption in the asymmetric carboxylate stretching region is attributed to the strong ionic interaction of zinc carboxylate ions in the blend.
1H-NMR spectra for all the synthesized metal carboxylates bearing phenyl ferrocene indicates the incorporation of ferrocene by giving similar pattern for ferrocene as shown in representative spectrum of nickel carboxylate in fig.
The higher the concentration of zinc carboxylate, the higher the activation energy.
No other metal carboxylate drier can approach the oxidative activity of cobalt.
In one study, the plasma concentration of oseltamivir carboxylate which is the active metabolite with administration of oseltamivir in intensive care patients was found to be 2 000-4 000-fold higher than 50% of the highest inhibitory level reported by Gubareva et al.
3+] can form inter and intramolecular complexes with carboxylate groups and hydroxide radical in hydrogels, leading to deswelling or contraction [17].
Carboxylate cement is stronger than eugenol-based cement and bonds weakly to the tooth itself Unmixed Carboxylate cement comes as a powder and liquid, that can be mixed on the plastic surface of a used autoclave bag, using the wooden end of a cotton tip applicator.
The superabsorbent hydrogel product comprises a collagen backbone with side chains that carry sodium carboxylate functional groups that are evidenced by peak at 1561 [cm.
In that way, carboxylate has been identified as the group mainly responsible for chelation between humic substances and metallic ions (Holman et al.