141-76-4Relevant articles and documents
Highly selective conversion of glyceric acid to 3-iodopropionic acid by hydriodic acid mediated hydrogenation
Li, Teng,Liu, Shengqin,Wang, Bing,Long, Jingen,Jiang, Jun,Jin, Ping,Fu, Yao,Yu, Haizhu,Yang, Weiran
, p. 4434 - 4442 (2019)
Glycerol, generated in abundance as the by-product in the process of biodiesel production and saponification, has seen attempts to convert it into value-added chemicals. However, due to the low selectivity of hydrogenolysis of the secondary hydroxyl group, valuable 1,3-substituted chemicals are difficult to obtain from glycerol by chemocatalysis. In this work, glyceric acid (GA), a renewable biomass from glycerol, was quantitatively converted to 3-iodopropionic acid (3-IPA) at 373 K in 3 h by hydroiodic acid mediated hydrogenation. As the reductant in this process, HI is oxidized to I2 and then regenerated in situ by metal catalysts and H2. The reaction pathway was proposed by intermediate identification and verified by a kinetics study and computational method. The catalytic system was shown to be stable and can be reused several times without loss in activity. As a 1,3-substituted chemical, 3-IPA is not only a potential monomer to form poly-3-hydroxypropionic acid, but also a good platform molecule to produce useful chemicals, e.g. 3-hydroxypropionic acid (3-HPA) and acrylic acid (AA), due to its highly reactive nature.
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Silberrad
, p. 611 (1904)
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Method for using glyceric acid to prepare 3-hydroxypropionic acid
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Paragraph 0015; 0019-0020; 0024-0037, (2018/08/28)
The invention provides a method for using glyceric acid to prepare 3-hydroxypropionic acid. The method comprises the following steps that in a wild reaction condition, hydroiodic acid and glyceric acid are used for generating 3-iodopropionic acid in water; then 3-iodopropionic acid is extracted by using an organic solvent; and finally, a basic catalyst is used for catalyzing and hydrolyze 3-iodopropionic acid to be 3-hydracrylic acid. The reactants used in the method are cheap and easy to obtain, and the sources are green; the reaction time is short, efficient and energy saving effects are achieved; the amount of by-products is less, the yield rate of the first-step product 3-iodopropionic acid can reach 99%, and the yield rate of the second-step product 3-hydracrylic acid can reach 99%. The first-step product is separated by using the extraction method, and the extraction method is directly used in a two-phase system hydrolysis reaction in the second step. The product selectivity in the method is high, post-treatment is easy, and the method is easy to industrialize. The reaction system is simple, the reaction cost is low, and the preparation method has very important application value.
A glyceric acid preparation of acrylic acid (by machine translation)
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Paragraph 0020; 0021; 0031; 0033; 0035; 0037; 0039; 0041, (2019/01/07)
The invention relates to a method for the preparation of acrylic acid from the glyceric acid, under mild reaction conditions in the first, in water, hydrogen iodic acid and glyceric acid generating 3 - iodoproptonic acid; then, extracting with an organic solvent 3 - iodoproptonic acid; finally, alkaline catalyst or Lewis acid catalyst catalytic 3 - iodoproptonic acid generating cancels out the reaction producing the acrylic. The reactant used in the present invention is cheap, source green; the reaction time is short, high-efficiency energy-saving; very few [...], 1st step product 3 - iodoproptonic acid productive rate can reach 99%, 2nd step product acrylic acid yield can be up to 99%. This method for the method of extraction separation 1st step product, and directly used for 2nd step two-phase system cancels out the reaction. This method high selectivity, after treatment is simple, easy industrialization; reaction system is simple, low in cost, has very important application value. (by machine translation)
