Tartronic add

A second atom of oxalyl has not been produced in glycerin, so as to convert the latter into a dibasie acid but there can be little doubt that tartronic add, which is formed by the spontaneous decomposition of nitrotartoric add, is the acid in question, and that it has the following constitution —... 

Finally, an enzyme is known that is capable of transforming uric add into urea and tartronic add ... 

The presence of additional hydroxide groups in dicarboxylic acids such as malic acid and tartaric acid increases the addic charader and, thus, the retention (Table 3-24). A corresponding chromatogram is shown in Fig. 3-127. However, a separation of malic acid (monohydroxysucdnic add) and malonic add is not possible under these conditions, while tartronic add (hydroxymalonic add) exhibits significantly higher retention. 

The Au-catalyzed glycerol oxidation was influenced by the kind of support, the size of Au particles and the reaction conditions such as concentration of glycerol, p02 and molar ratio of NaOH to glycerol. As metal oxide supports showed inferior selectivity to glyceric acid compared to carbons, due to successive oxidation and C—C bond cleavage to form di-adds such as tartronic acid and glycolic acid, research has focused on Au NPs supported on carbon, as in the case of ethylene glycol oxidation [182]. Indeed, the catalytic activity was influenced by the kind of carbon support in terms of porous texture [183]. 

Exists in free state as dihydroxymalonic add (ii). Q st. Mj>. 121 (119-21 ). Veiy sii. EtOH, E O. Keduces NHo-AgNOg. KMnOg —oxalic add. Cone. KOH —> oxalic acid + ftHinic acid. NaHg —>- tartronic acid. 

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