申请人:Hoechst Aktiengesellschaft
公开号:US04655883A1
公开(公告)日:1987-04-07
The present invention relates to a new process for the preparation of phosphonic acid esters of the formula I ##STR1## in which Ar denotes phenyl, a binuclear or polynuclear aromatic radical, cycloheptatrienyl, furyl or pyridyl, X denotes (substituted) alkyl, (substituted) alkoxy or optionally substituted aryl, aryloxy, heterocyclyloxy or arylmercapto radicals, phenylcarbonylamino, alkylcarbonylamino or alkoxycarbonylamino, alkylmercapto, alkoxycarbonyloxy, alkoxycarbonylalkoxy, phenylaminocarbonyloxy or alkylaminocarbonyloxy or two radicals X in the orthoposition together form a (substituted) (C.sub.3 -C.sub.4) chain in which 2 carbon atoms can be replaced by oxygen, Y denotes halogen, alkoxycarbonyl, alkylcarbonyl, nitro, nitroso, cyano, alkylsulfonyl, phenylsulfonyl, alkoxysulfonyl, phenoxysulfonyl, alkoxy/alkylphosphinyl, halogenated alkyl, formyl or (substituted) amidosulfonyl, R denotes alkyl, n denotes 1, 2 or 3 and m denotes 0, 1, 2 or 3, wherein a compound of the formula II X.sub.n --Ar--Y.sub.m (II) is subjected to anodic oxidation in the presence of a compound of the formula III P(OR).sub.3 (III) and of an alkanol in an undivided electrolytic cell. Some of the compounds obtainable by this process are new.
本发明涉及一种制备公式I的磷酸酯的新工艺:##STR1## 其中Ar表示苯基,双核或多核芳基,环庚三烯基,呋喃基或吡啶基,X表示(取代)烷基,(取代)烷氧基或可选取代的芳基,芳氧基,杂环氧基或芳基硫醇基,苯基羰基氨基,烷基羰基氨基或烷氧基羰基氨基,烷基硫醇基,烷氧基羰基氧基,烷氧基羰基烷氧基,苯基氨基羰基氧基或烷基氨基羰基氧基,或两个X基在邻位上共同形成一个(取代)(C.sub.3-C.sub.4)链,其中2个碳原子可以被氧原子替换,Y表示卤素,烷氧基羰基,烷基羰基,硝基,亚硝基,氰基,烷基磺酰基,苯基磺酰基,烷氧基磺酰基,苯氧基磺酰基,烷氧基/烷基膦酰基,卤代烷基,甲酰基或(取代)氨基磺酰基,R表示烷基,n表示1,2或3,m表示0,1,2或3,其中将公式II X.sub.n--Ar--Y.sub.m (II)的化合物在未分隔的电解池中在存在公式III P(OR).sub.3 (III)的化合物和一种醇的情况下进行阳极氧化。此工艺获得的一些化合物是新的。