申请人:W.R. Grace & Co.-Conn.
公开号:EP0368154A1
公开(公告)日:1990-05-16
Polyether bis-phosphonic acid compounds are disclosed which have the formula (HO)2OP-R-(OR')n-OR-PO-(OH)2 where R is selected from the group consisting of methylene and ethylene, R is selected from the group consisting of ethylene and ethylene substituted with one or more methyl groups, and n is an integer from 1 to 4, water soluble salts thereof, and esters thereof with alkyl groups having from 1 to 6 carbon atoms. Also disclosed is a novel preparation of certain of these compounds by reacting certain hydroxyalkylphosphonic acid dialkyl ester compounds with certain 2-benzyloxyalkyl organic sulfonates; reacting the intermediate formed therefrom with hydrogen or a hydrogen source; reacting the intermediate formed therefrom with a hydrogen ion acceptor and certain sulfonyl chlorides; and reacting the intermediate formed therefrom with certain hydroxyalkylphosphonic acid dialkyl ester compounds to form a polyether bis-phosphonic acid compound which may be hydrolyzed to form the polyether bis-phosphonic acid. Useful intermediates are disclosed which have the formulas
HOR'-OR-PO(OR")2, HOR'-OR-PO(OH)2, and X-02S-OR'-OR-PO(OR")2, wherein the above-indicated benzene rings of said formulas are optionally substituted with selected groups, wherein R and R are as defined above, wherein R" is an alkyl group having from 1 to 6 carbon atoms, and wherein X is selected from
and alkyl groups having from about 1 to 6 carbon atoms.
本发明公开了聚醚双膦酸化合物,其式为(HO)2OP-R-(OR')n-OR-PO-(OH)2,其中R选自由亚甲基和亚乙基组成的组,R选自由亚乙基和被一个或多个甲基取代的亚乙基组成的组,n为1至4的整数。本发明还公开了上述某些化合物的一种新型制备方法:将某些羟基烷基膦酸二烷基酯化合物与某些 2-苄氧基烷基有机磺酸盐反应;将由此形成的中间体与氢或氢源反应;将由此形成的中间体与氢离子接受体和某些磺酰氯反应;以及 将由此形成的中间体与某些羟基烷基膦酸二烷基酯化合物反应,形成聚醚双膦 酸化合物,该化合物可水解形成聚醚双膦酸。已公开的有用的中间体的分子式为
HOR'-OR-PO(OR")2、HOR'-OR-PO(OH)2 和 X-02S-OR'-OR-PO(OR")2,其中上述式子的苯环任选被所选基团取代,其中 R 和 R 如上定义,其中 R "是具有 1 至 6 个碳原子的烷基,X 选自
和具有约 1 至 6 个碳原子的烷基。