PROCESS FOR PRODUCING AMINOALKYLSULFONIC ACID AND METHOD OF SALT EXCHANGE FOR SALT THEREOF
申请人:Wako Pure Chemical Industries, Ltd.
公开号:EP1548002A1
公开(公告)日:2005-06-29
The present invention relates to a method for efficiently producing an aminoalkylsulfonic acid in an industrial scale, and provides
"a process for producing an aminoalkylsulfonic acid represented by the general formula [2]:
wherein R1 and R2 are each independently a hydrogen atom, an alkyl group, an aryl group or an aralkyl group; and R3 and R4 are each independently a hydrogen atom or an alkyl group,
comprising reacting an aminoalkylsulfonate salt represented by the general formula [1]:
wherein M is an alkali metal atom, an organic ammonium ion or an ammonium ion; and R1 to R4 are the same as described above,
an aqueous solution thereof, or a solution dissolving any one of them in a water-soluble organic solvent, selected from alcohols having 1 to 3 carbon atoms, carboxylic acids having 2 to 12 carbon atoms and dimethylformamide, with an organic acid; and
a method of salt exchange for an aminoalkylsulfonate salt represented by the general formula [1']:
wherein M' is an alkali metal atom, an organic ammonium ion or an ammonium ion; and R1 and R4 are the same as described above, comprising reacting an aminoalkylsulfonate salt represented by the above general formula [2] with a hydroxide represented by the general formula [6]:
M'OH [6]
wherein M' is the same as described above,
in an alcohol or water".
本发明涉及一种在工业规模上高效生产氨基磺酸的方法,并提供“一种生产由通式[2]表示的氨基磺酸的方法:其中R1和R2分别是氢原子、烷基、芳基或芳基烷基;R3和R4分别是氢原子或烷基的氨基磺酸盐发生反应所得的方法,通式[1]表示如下:其中M是碱金属原子、有机铵离子或铵离子;R1至R4与上述相同,其水溶液或将任何一种溶解于水溶性有机溶剂中的溶液,所选的有1至3个碳原子的醇、有2至12个碳原子的羧酸和二甲基甲酰胺,与有机酸反应;以及氨基磺酸盐交换的方法,通式[1']表示如下:其中M'是碱金属原子、有机铵离子或铵离子;R1和R4与上述相同,包括将上述通式[2]表示的氨基磺酸盐与通式[6]表示的氢氧化物发生反应:M'OH [6]其中M'与上述相同,在醇或水中”。