申请人:Henkel & Cie G.m.b.H.
公开号:US03979385A1
公开(公告)日:1976-09-07
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.
生产1-氨基烷基-1,1-二膦酸酯的方法,其化学式为##SPC1##其中R.sub.1是从氢、低烷基和苯中选择的一种成员,R.sub.2和R.sub.3是从氢、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、具有7至18个碳原子的烷基苯、具有7至18个碳原子的苯基烷基以及与氮原子一起的哌啶基、吡咯啉基和吗啉基中选择的一种成员,X是从氢、碱金属、铵、吡啶铵、胍铵和单、二、三低烷基醇铵中选择的一种成员,但至少其中之一的R.sub.1、R.sub.2和R.sub.3不是氢,其基本上包括将从磷三卤化物中选择的磷三卤化物和磷三溴化物与具有上述分配含义的单羧酸酰胺的化学式##SPC2##在0°C至75°C的温度下反应,将所得的反应产物进行水解,并回收所述的1-氨基烷基-1,1-二膦酸酯。这些1-氨基烷基-1,1-二膦酸酯中的一些是新颖的,能够与重金属形成络合物。