METHOD FOR SYNTHESIS OF KETO ACIDS OR AMINO ACIDS BY HYDRATION OF ACETYLENE COMPOUND
申请人:Ogo Seiji
公开号:US20090216044A1
公开(公告)日:2009-08-27
An object of the present invention is to provide a method for synthesis of keto acids by hydration of an acetylene compound (acetylene-carboxylic acids) under mild conditions free from harmful mercury catalysts and a method for synthesis of amino acids from acetylene-carboxylic acids in a single container (one-pot or tandem synthesis). In one embodiment of the method according to the present invention for synthesis of keto acids, acetylene-carboxylic acids is hydrated in the presence of a metal salt represented by General Formula (1),
where M
1
represents an element in Group VIII, IX, or X of the periodic table, and X
1
, X
2
, or X
3
ligand represents halogen, H
2
O, or a solvent molecule, and k represents a valence of a cation species, and Y represents an anion species, and L represents a valence of the anion species, and each of K and L independently represents 1 or 2, and k×m=L×n.
The present invention is directed to a method for purifying pyruvic acid compounds, which method comprises reacting a pyruvic acid compound of general formula (I):
wherein R1 is an optionally substituted lower alkyl group, a lower alkenyl group, a lower alkynyl group, a cycloalkyl group, an aryl group, or a heterocyclic group, and R2 is a lower alkyl group, with a bisulfite of general formula (II):
MHSO3 (II)
wherein M is NH4 or an alkali metal, to give a bisulfite adduct of the pyruvic acid compound and then decomposing the adduct with an acid. According to the present invention, pyruvic acid compounds can be purified by simple and easy procedures without using purification techniques such as distillation or column chromatography, and the above method is advantageous as a process for the production on an industrial scale.
本发明涉及一种纯化丙酮酸化合物的方法,该方法包括使通式(I)的丙酮酸化合物反应:
其中 R1 是任选取代的低级烷基、低级烯基、低级炔基、环烷基、芳基或杂环基,R2 是低级烷基,与通式(II)的亚硫酸氢盐反应:
MHSO3 (II)
其中 M 为 NH4 或碱金属,以得到丙酮酸化合物的亚硫酸氢盐加合物,然后用酸分解该加合物。根据本发明,丙酮酸化合物可以通过简单易行的程序进行纯化,而无需使用蒸馏或柱层析等纯化技术,上述方法作为一种工业规模的生产工艺是非常有利的。
METHOD FOR SYNTHESIS OF KETO ACID OR AMINO ACID BY HYDRATION OF ACETHYLENE COMPOUND
申请人:Japan Science and Technology Agency
公开号:EP1932824A1
公开(公告)日:2008-06-18
An object of the present invention is to provide a method for synthesis of keto acids by hydration of an acetylene compound (acetylene-carboxylic acids) under mild conditions free from harmful mercury catalysts and a method for synthesis of amino acids from acetylene-carboxylic acids in a single container (one-pot or tandem synthesis). In one embodiment of the method according to the present invention for synthesis of keto acids, acetylene-carboxylic acids is hydrated in the presence of a metal salt represented by General Formula (1),
where M1 represents an element in Group VIII, IX, or X of the periodic table, and X1, X2, or X3 ligand represents halogen, H2O, or a solvent molecule, and k represents a valence of a cation species, and Y represents an anion species, and L represents a valence of the anion species, and each of K and L independently represents 1 or 2, and k × m = L × n.
本发明的目的是提供一种在温和条件下通过水合乙炔化合物(乙炔-羧酸)合成酮酸的方法,不使用有害的汞催化剂,以及一种在单个容器中从乙炔-羧酸合成氨基酸的方法(单锅或串联合成)。在根据本发明合成酮酸的方法的一个实施方案中,乙炔-羧酸在通式(1)代表的金属盐存在下水合、
其中 M1 代表元素周期表第 VIII、IX 或 X 族中的元素,X1、X2 或 X3 配体代表卤素、H2O 或溶剂分子,K 代表阳离子种类的价数,Y 代表阴离子种类,L 代表阴离子种类的价数,K 和 L 各自独立地代表 1 或 2,且 k × m = L × n。
A Convenient Synthesis of α-Keto-esters and Unsymmetrical 1,2-Diketones from Carbonyl Compounds
作者:Philippe COUTROT、Claude LEGRIS
DOI:10.1055/s-1975-23681
日期:——
Investigation into the regioselective C-deuteriation of α-keto esters
作者:Claude Grison、Sylvain Petek、Philippe Coutrot
DOI:10.1016/j.tet.2005.05.031
日期:2005.7
Results are reported on the efficient regioselective C-mono and C-dideuteriation of iodomagnesium enolates derived from alpha-ketoesters in aliphatic and glucidic series using [D-4]acetic acid as the best deuterium donor. (c) 2005 Elsevier Ltd. All rights reserved.