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    • 3. 发明授权
    • Benzimidazolyl-2-alkane-phosphonic acids
    • 苯并咪唑-2-烷 - 膦酸
    • US4278791A
    • 1981-07-14
    • US101977
    • 1979-12-10
    • Artur BottaHeinz-Joachim RotherGunther Teichmann
    • Artur BottaHeinz-Joachim RotherGunther Teichmann
    • C09C3/00B01F17/00B01F17/32C07F9/6506C09C3/08C23F11/167C09B23/14C07F9/28
    • B01F17/0064C07F9/65068C23F11/1676
    • A benzimidazolyl-2-alkane-phosphonic acid of the formula ##STR1## wherein R.sup.1 and R.sup.2 are identical or different and denote hydrogen, lower alkyl, phenyl, halogen, trifluoromethyl, nitro or lower alkoxy, or together form a fused-on benzene ring,R.sup.3 denotes hydrogen, lower alkyl or phenyl or benzyl which is optionally substituted by lower alkyl or halogen andA denotes a straight-chain or branched, saturated or unsaturated bivalent hydrocarbon radical with 1 to 15 carbon atoms, which can be substituted by phenyl which is optionally substituted by lower alkyl or halogen or by carboxyl or the phosphonic acid group,and its salt with an inorganic or organic base or acid, and a method of preparing the same by contacting an o-arylene diamine of the formula ##STR2## wherein R.sup.1, R.sup.2 and R.sup.3 have the meaning given above, with a phosphonocarboxylic acid of the formula ##STR3## wherein Y denotes carboxyl, carbalkoxy, carbophenoxy, cyano, carbamido or carbochloride,R.sup.7 and R.sup.8 are identical or different and denote hydrogen, lower alkyl or phenyl, or together can form a ring, by means of an ethylene or propylene bridge, andA' denotes a straight-chain or branched, saturated or unsaturated bivalent hydrocarbon radical with 1 to 15 carbon atoms, which can be substituted by phenyl which is optionally substituted by lower alkyl or halogen or by Y or the group ##STR4## wherein Y, R.sup.7 and R.sup.8 have the abovementioned meaning, in the presence of an acid..The new benzimidazolyl-2-alkane-phosphonic acids are useful as anti-corrosion agents (corrosion inhibitors), as well as wetting agents for aqueous suspensions of pigments and fillers.
    • 其中R 1和R 2相同或不同,表示氢,低级烷基,苯基,卤素,三氟甲基,硝基或低级烷氧基,或一起形成稠合的苯环上的苯并咪唑基-2-烷烃 - 膦酸 ,R3表示氢,低级烷基或苯基或苄基,其任选被低级烷基或卤素取代,A表示具有1至15个碳原子的直链或支链,饱和或不饱和的二价烃基,其可被苯基 任选地被低级烷基或卤素取代,或被羧基或膦酸基团取代,及其与无机或有机碱或酸的盐,以及通过使下式的邻苯二胺与式 R 1,R 2和R 3具有上面给出的含义,其中Y表示羧基,烷氧基,羰基苯氧基,氰基,氨基甲酰基或碳酰胺,式中的膦酰基羧酸,R7和R8相同或不同 nd表示氢,低级烷基或苯基,或一起可以通过乙烯或丙烯桥形成环,A'表示具有1至15个碳原子的直链或支链,饱和或不饱和的二价烃基,其中 可以被任选被低级烷基或卤素取代的苯基或被Y取代的苯基或其中Y,R 7和R 8具有上述含义的基团在酸的存在下被取代。新的苯并咪唑-2-基烷 - 膦酸可用作防腐剂(腐蚀抑制剂),以及颜料和填料的水性悬浮液的润湿剂。
    • 8. 发明授权
    • Process for the preparation of oligophenyls dihalogenated in the
4,4'-position
    • 制备4,4'-位二卤代低聚苯基的方法
    • US5053566A
    • 1991-10-01
    • US571956
    • 1990-08-23
    • Artur BottaHans-Josef BuyschLothar Puppe
    • Artur BottaHans-Josef BuyschLothar Puppe
    • C07C41/22B01J29/50B01J29/60B01J29/70C07B61/00C07C17/12C07C25/18C07C41/38C07C43/225
    • C07C17/12
    • Oligophenyls dihalogenated in the 4,4'-position, of the formula ##STR1## can be prepared by catalyzed halogenation of oligophenyls of the formula ##STR2## wherein, in the formulae, X.sup.1 and X.sup.2 independently of one another represent chlorine or bromine, preferably chlorine,X.sup.3 denotes hydrogen, chlorine or bromine, preferably hydrogen or chlorine and particularly preferably hydrogen,R.sup.1, R.sup.2 and R.sup.3 independently of one another represent hydrogen, C.sub.1 -C.sub.4 -alkyl (preferably methyl or ethyl and particularly preferably methyl), C.sub.1 -C.sub.4 -alkoxy (preferably methoxy or ethoxy and particularly preferably methoxy), fluorine, chlorine or bromine anda assumes the value zero or one,with halogenating agents, the preparation being carried out in the presence of methylene chloride or solvent mixtures essentially containing methylene chloride and in the presence of zeolites of the L structure type which contain metal cations.
    • 在式(Ⅰ)的4,4'-位上二卤代的低级苯基可以通过式(II)的低聚苯基的催化卤化来制备,其中在式中X1和X2彼此独立地 代表氯或溴,优选氯,X3表示氢,氯或溴,优选氢或氯,特别优选氢,R 1,R 2和R 3彼此独立地表示氢,C 1 -C 4烷基(优选甲基或乙基,特别优选 甲基),C1-C4-烷氧基(优选甲氧基或乙氧基,特别优选甲氧基),氟,氯或溴,并且与卤化剂呈现零或一个值,该制剂在二氯甲烷或溶剂存在下进行 基本上含有二氯甲烷的混合物和在含有金属阳离子的L结构类型的沸石的存在下。