Penn State Berks College, The Pennsylvania State University, Reading, Pennsylvania 19610, USA.
J Phys Chem A. 2010 Feb 25;114(7):2526-33. doi: 10.1021/jp911492f.
It was found that oxalic acid is one of the main products in the Briggs-Rauscher oscillating reaction. In nonoscillating solutions, oxidation of iodomalonic acid and/or diiodomalonic acid by Fenton-type reactions also produced oxalic acid as well as I(2). Mesoxalic acid yielded oxalic acid under similar conditions. Tartronic acid was nearly inert to Fenton-type reactions; however, tartronic acid was oxidized by iodate and iodine to mesoxalic acid, which in turn could form oxalic acid in the presence of H(2)O(2) plus catalyst. Iodotartronic acid appeared to be a short-lived but significant intermediate, thus both tartronic acid and mesoxalic acid are possible intermediates. Glycolic acid and glyoxylic acid are not intermediates in the oxidation of iodomalonic acid, since they in turn produce formic acid under similar nonoscillating conditions.
研究发现，草酸是 Briggs-Rauscher 振荡反应的主要产物之一。在非振荡溶液中，通过 Fenton 型反应氧化碘代丙二酸和/或二碘代丙二酸也会产生草酸和 I(2)。在类似条件下，丙二酸也会生成草酸。苹果酸在 Fenton 型反应中几乎没有活性；然而，丙二酸可以被碘酸盐和碘氧化为丙二酸，丙二酸在 H(2)O(2)加催化剂的存在下可以进一步生成草酸。碘代丙二酸似乎是一种短暂但重要的中间产物，因此丙二酸和丙二酸都是可能的中间产物。在碘代丙二酸的氧化过程中，乙醇酸和乙醛酸不是中间产物，因为它们在类似的非振荡条件下会产生甲酸。
