Topic
Benzoic acid
About: Benzoic acid is a research topic. Over the lifetime, 11832 publications have been published within this topic receiving 167127 citations. The topic is also known as: Retardex & E210.
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TL;DR: In this article, a ring hydroxylation resulting in 2-hydroxyindolyl-3-acetic acid and a hydroxynaphthalene-1-ACetic acid was demonstrated.
Abstract: PREVIOUS investigations of the auxin metabolism in plant tissues led to the following findings of a ring hydroxylation resulting in 2-hydroxyindolyl-3-acetic acid1,2, and a hydroxynaphthalene-1-acetic acid, which probably hydroxylated in the 8-position, and their glucosidos2. Other known products of the auxin metabolism were the aspartic acid conjugates3 and the βd-glucose esters4,5 of the free auxinic acids. Analogues of the last two metabolites have also been described for benzoic acid4,6. In wheat coleoptiles no hydroxylation of benzoic acid could be demonstrated.
65 citations
TL;DR: Temperature-programmed hydrogenation (TPH) is shown to be an effective technique to characterize toluene intermediates as discussed by the authors, where Titania is a hydrogenation catalyst at elevated temperatures, and the intermediates hydrogenate to benzene, which are more weakly bound.
65 citations
TL;DR: In this paper, the chemical behavior of aromatic carboxylic acids in water at elevated temperatures has implications for industrial chemistry, fuel processing and waste treatment processes, and the authors investigated the hydrothermal reactions of six different aromatic CARO acids from 250-410°C at times up to 240 min.
Abstract: The chemical behavior of aromatic carboxylic acids in water at elevated temperatures has implications for industrial chemistry, fuel processing and waste treatment processes. Therefore, the hydrothermal reactions of six different aromatic carboxylic acids were investigated from 250–410 °C at times up to 240 min. Benzoic acid was the most stable of the six, showing negligible degradation after 1 h of hydrothermal treatment at 350 °C. Terephthalic acid, 2,6-naphthalene dicarboxylic acid and isophthalic acid were stable after 1 h at 300 °C, but they decarboxylated to form monoacids in 10–15% yields at 350 °C. Trimellitic anhydride decomposed completely after 30 min at 350 °C, but showed no appreciable decomposition after 30 min at 250 °C. Terephthalic acid and isophthalic acid were the main degradation products, but o-phthalic acid was also formed in small amounts at 350 °C. The o-phthalic acid conversion to benzoic acid was 73% after 60 min at 300 °C, but the diacid remained stable at 250 °C for 1 h. An autocatalytic kinetics model provided a good description of the trimellitic anhydride and terephthalic acid decomposition at 300 and 410 °C, respectively.
65 citations
TL;DR: In this article, the molar mixing enthalpy of solution H E is estimated from the h parameter to discuss the properties of solution, and the experimental data are correlated with the λh equation.
65 citations
TL;DR: A mininiaturized procedure of biotransformation in solid medium showed that, among the strains able to metabolise the substrates, the more frequent behaviours were the degradation of cinnamic acid or transformation in cinnamamide, while ferulic acid was mostly degraded with transient accumulation of vanillic acid in few cases.
65 citations