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    • 1. 发明授权
    • 1-Aminoalkane-1,1-diphosphonic acids and their salts
    • 1-氨基链烷-1,1-二膦酸及其盐
    • US3979385A
    • 1976-09-07
    • US475207
    • 1974-05-31
    • Klaus WollmannWalter PlogerKarl-Heinz Worms
    • Klaus WollmannWalter PlogerKarl-Heinz Worms
    • C07F9/38C07D295/04
    • C07F9/3873
    • A process for the production of 1-aminoalkane-1,1-diphosphonates of the formula ##SPC1##Wherein R.sub.1 is a member selected from the group consisting of hydrogen, lower alkyl and phenyl, R.sub.2 and R.sub. 3 are members selected from the group consisting of hydrogen, alkyl having 1 to 22 carbon atoms, cycloalkyl having 5 to 6 carbon atoms, phenyl, alkylphenyl having 7 to 18 carbon atoms, phenylalkyl having 7 to 18 carbon atoms and together with the nitrogen atom, piperidino, pyrrolidino and morpholino, and X is a member selected from the group consisting of hydrogen, alkali metal, ammonium, pyridinium, guanidinium and mono-, di-, and tri-lower-alkanol-ammonium with the proviso that at least one of R.sub.1, R.sub.2 and R.sub.3 is other than hydrogen, which consists essentially in reacting a phosphorus trihalide selected from the group consisting of phosphosus trichloride and phosphorus tribromide with a monocarboxylic acid amide of the formula ##SPC2##wherein the molecular weight of said carboxylic acid amide is over 46 and R.sub.1, R.sub.2 and R.sub. 3 have the above assigned meanings, at a temperature of from 0.degree. to 75.degree.C, subjecting the resultant reaction product to hydrolysis, and recovering said 1-aminoalkane-1,1-diphosphonates. The 1-aminoalkane-1,1-diphosphonates, some of which are novel, are capable of forming complexes with heavy metals.
    • 制备式WHEREIN R1的1-氨基烷烃-1,1-二膦酸盐的方法是选自氢,低级烷基和苯基的成员,R 2和R 3是选自氢, 具有1至22个碳原子的烷基,具有5至6个碳原子的环烷基,苯基,具有7至18个碳原子的烷基苯基,具有7至18个碳原子的苯基烷基以及氮原子,哌啶子基,吡咯烷子基和吗啉代,X是 选自氢,碱金属,铵,吡啶鎓,胍和单 - ,二 - 和三 - 低级 - 链烷醇 - 铵的成员,条件是R 1,R 2和R 3中的至少一个不是氢, 其主要在于使选自三磷化磷和三溴化磷的三卤化磷与下式的一元羧酸酰胺反应,其中所述羧酸酰胺的分子量超过46且R1,R2 和R 3具有上述含义,在0℃至75℃的温度下,使所得反应产物水解,并回收所述1-氨基烷烃-1,1-二膦酸盐。 其中一些是新型的1-氨基烷烃-1,1-二膦酸盐能够与重金属形成络合物。