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    • 2. 发明授权
    • Preparation of solutions of imido-alkancarboxylic acids suitable for
peroxidation processes
    • 适用于过氧化反应的亚氨基 - 链烷酸的溶液的制备
    • US5703242A
    • 1997-12-30
    • US777699
    • 1996-12-20
    • Claudio CavallottiGilberto NucidaClaudio Troglia
    • Claudio CavallottiGilberto NucidaClaudio Troglia
    • C07D209/48C11D3/39C11D3/395C11D7/54
    • C07D209/48C11D3/3945
    • Purification process of imido-alkancaboxylic acids from contaminants represented by acid-carboxylic, lactam or aminoacids and water comprising:A) Preparation of the imido-alkancarboxylic acid precursor by reaction of an anhydride a1) or the corresponding acids, with an aminoacid b1) with water; or a1) with a lactam b2) and water; at temperatures comprised between 100.degree. and 250.degree. C., under pressure of an inert gas from 1 to 30 bar, for reaction times from 2 to 20 hours; wherein the ratio by moles between a1/(b1 or b2)/water is comprised between 1/1.05-1.1/0.5-2.5; optional addition of water such that it is at least, of 2 moles for mole of a1); B) discharge of the precursor obtained in phase A) in a solvent immiscible with water; C) separation of the aqueous phases from the organic phase; D) recovery of the organic phase for the successive peroxidation reaction.
    • 由酸 - 羧酸,内酰胺或氨基酸和水代表的污染物中的亚氨基 - 烷基仲烷酸的纯化过程包括:A)通过酸酐a1)或其相应的酸与氨基酸b1)反应制备亚氨基 - 链烷羧酸前体 水; 或a1)与内酰胺b2)和水; 在100至250℃的温度下,在惰性气体压力为1至30巴下,反应时间为2至20小时; 其中a1 /(b1或b2)/水之间的摩尔比在1 / 1.05-1.1 / 0.5-2.5之间; 任选地加入水,使得其至少为摩尔a1)2摩尔; B)将A相中得到的前体排放在与水不混溶的溶剂中; C)水相与有机相的分离; D)回收有机相用于连续的过氧化反应。