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Decarboxylation is a chemical reaction that removes a carboxyl group and releases carbon dioxide (CO 2). Usually, decarboxylation refers to a reaction of carboxylic acids, removing a carbon atom from a carbon chain. The reverse process, which is the first chemical step in photosynthesis, is called carboxylation, the addition of CO 2 to a
Studies of decarboxylation over nickel and palladium-based catalysts were first reported by Wilhelm Maier et al., in 1982, [6] when they achieved the deoxygenation of several carboxylic acids via decarboxylation under a hydrogen atmosphere. This included the conversion of aliphatic acids (such as heptanoic and octanoic acids) to alkanes (namely ...
For simple decarboxylation reaction, the enzyme involved in this reaction is pyruvate decarboxylase, which is different from oxidative decarboxylation. During the reaction, pyruvate is directly connected with the thiazole ring of TPP, and the carboxyl group on pyruvate is removed after the connection to generate carbon dioxide.
In the absence of metal catalysts, decarbonylation (vs decarboxylation) is rarely observed in organic chemistry. One exception is the decarbonylation of formic acid: H CO OH → CO + H 2 O. The reaction is induced by sulfuric acid, which functions as both a catalyst and a dehydrating agent.
The Barton decarboxylation is a radical reaction in which a carboxylic acid is converted to a thiohydroxamate ester (commonly referred to as a Barton ester). The product is then heated in the presence of a radical initiator and a suitable hydrogen donor to afford the decarboxylated product.
This was a result of the fact that any halide anion generated in the reaction inhibited the Cu-catalyzed decarboxylation process. [15] Further optimization of the system and catalyst conditions has made decarboxylative cross-coupling using bimetallic Pd–Cu systems applicable to organic synthesis, most predominantly in the formation of biaryls ...
Ketonic decarboxylation (also known as decarboxylative ketonization) is a type of organic reaction and a decarboxylation converting two equivalents of a carboxylic acid (R−C(=O)OH) to a symmetric ketone (R 2 C=O) by the application of heat.
Pyruvate decarboxylation or pyruvate oxidation, also known as the link reaction (or oxidative decarboxylation of pyruvate [1]), is the conversion of pyruvate into acetyl-CoA by the enzyme complex pyruvate dehydrogenase complex.
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