申请人:Bayer Aktiengesellschaft
公开号:US04870182A1
公开(公告)日:1989-09-26
A process for the preparation of a compound of the formula ##STR1## in which Y is a nitrile group, an ester group COOR.sup.1 or an acid amide CONR.sup.2 R.sup.3, R.sup.1, R.sup.2 and R.sup.3 each independently is hydrogen or C.sub.1 -C.sub.4 -alkyl, and R.sup.3 may also be phenyl, and X.sup.2, X.sup.3, X.sup.4 and X.sup.5 each independently is hydrogen, halogen, nitro, cyano, alkyl having 1-3 carbon atoms, alkoxy having 1-3 carbon atoms, alkylmercapto having 1-3 carbon atoms, alkylsulphonyl having 1-3 carbon atoms, or a phenylsulphonyl group which is optionally substituted in the aryl radical, comprising reacting an aminoacrylate of the formula in which X.sup.1 is halogen, a nitro group, an alkoxy, alkoxy, alkylmercapto or alkylsulphonyl group having 1-3 carbon atoms in each case, or an arylsulphonyl group, W is hydrogen or a --CH.sub.2 CH.sub.2 Z radical, Z is is a nitrile group, an ester group COOR.sup.4 or an acid amide group CONR.sup.5 R.sup.6, and R.sup.4, R.sup.5 and R.sup.6 each independently is hydrogen or C.sub.1 -C.sub.4 -alkyl, and R.sup.5 may also be phenyl, with an acid acceptor in an aprotic solvent. Some of the reactants are new, as are the products which are intermediates for antibacterially active 1-alkyl-4-quinolone-3-carboxylic acids.
一种制备公式为##STR1##的化合物的方法,其中Y是腈基,酯基COOR.sup.1或酸酰胺基CONR.sup.2R.sup.3,R.sup.1、R.sup.2和R.sup.3各自独立地是氢或C.sub.1-C.sub.4-烷基,R.sup.3也可以是苯基,X.sup.2、X.sup.3、X.sup.4和X.sup.5各自独立地是氢、卤素、硝基、氰基、具有1-3个碳原子的烷基、具有1-3个碳原子的烷氧基、具有1-3个碳原子的烷基硫基、具有1-3个碳原子的烷基磺酰基,或者是在芳基上可选择地取代的苯基磺酰基,包括在无水溶剂中与一种酸受体反应的公式为的氨基丙烯酸酯,其中X.sup.1是卤素、硝基、烷氧基、烷氧基、具有1-3个碳原子的烷基硫基或烷基磺酰基,或者是芳基磺酰基,W是氢或-CH.sub.2 CH.sub.2 Z基团,Z是腈基,酯基COOR.sup.4或酸酰胺基CONR.sup.5R.sup.6,R.sup.4、R.sup.5和R.sup.6各自独立地是氢或C.sub.1-C.sub.4-烷基,R.sup.5也可以是苯基,与一种无水溶剂中的酸受体反应。其中一些反应物是新的,产品是抗菌活性1-烷基-4-喹啉酮-3-羧酸的中间体。