1114-00-7Relevant articles and documents
-
Halpern,J.,Maher,J.P.
, p. 5361 - 5366 (1965)
-
-
Hughes,Watson
, p. 1733,1739 (1930)
-
Preparation method of butynedioic acid
-
Paragraph 0050-0051, (2020/07/21)
The invention discloses a preparation method of butynedioic acid. The method comprises the following steps of: (1) firstly, carrying out water-free and oxygen-free treatment on a closed reaction kettle; (2) putting calcium carbide, a solvent, a catalyst and an auxiliary agent into the reaction kettle, introducing carbon dioxide into the reaction kettle, and heating and pressurizing for reaction; (3) separating the reacted mixture obtained in the step (2) to obtain a liquid mixture, and adding a KOH solution into the liquid mixture; stirring to separate out a white precipitate; and dissolving the white precipitate in hot water, acidifying with concentrated sulfuric acid, cooling, separating out the white precipitate, and filtering to obtain the product. The synthesis method disclosed by theinvention is relatively environment-friendly and low in production cost.
Kinetic study of the Ce(III)-, Mn(II)-, or ferroin-catalyzed Belousov-Zhabotinsky reaction with pyruvic acid
Lin, Hsing-Lien,Yu, Yueh-O,Jwo, Jing-Jer
, p. 408 - 418 (2007/10/03)
Ce(III)-, Mn(II)-, or ferroin (Fe(phen)32+)-catalyzed reaction of bromate ion and pyruvic acid (PA) or its dimer exhibits oscillatory behavior. Both the open-chain dimer (parapyruvic acid, γ-methyl-γ-hydroxyl-α-keto-glutaric acid, DP