申请人:Hoechst Aktiengesellschaft
公开号:US04045480A1
公开(公告)日:1977-08-30
Preparation of 2,5-dioxo-1,2-oxa-phospholanes of the formula (I) ##STR1## wherein R.sup.1 represents an optionally substituted alkyl having up to 18 carbon atoms, a cycloalkyl radical having up to 8 carbon atoms, an alkylene radical having up to 8 carbon atoms, an aryl radical having up to 14 carbon atoms which may be substituted by lower alkyl groups, lower alkoxy groups, halogen or by amino groups alkylated or dialkylated by lower alkyl groups, or an aralkyl radical having up to 15 carbon atoms which may be substituted in an analogous manner as the aryl radical, R.sup.2 represents a lower alkyl radical or hydrogen and R.sup.3 represents an alkyl radical having up to 6 carbon atoms, a phenyl radical which may be substituted by halogen or by lower alkyl groups, a benzyl radical or hydrogen, by reacting 2-halogenoformylethylphosphonic acid halides of the formula (II) ##STR2## wherein R.sup.1, R.sup.2 and R.sup.3 are defined as in formula (I) and X represents chlorine or bromine, with approximately an equimolar quantity of water or one phosphinic-carboxylic acid of the formula (II), wherein both radicals X represent OH-groups.
公式(I)的2,5-二氧代-1,2-氧代磷杂环戊烷的制备 ##STR1## 其中R.sup.1代表一个可选择地取代的碳原子数最多为18的烷基、一个碳原子数最多为8的环烷基、一个碳原子数最多为8的烷基、一个碳原子数最多为14的芳基,该芳基可以被较低的烷基、较低的烷氧基、卤素或被较低的烷基烷化或二烷化的氨基取代,或者一个碳原子数最多为15的芳基烷基,该芳基烷基可以被类似于芳基的方式取代,R.sup.2代表一个较低的烷基或氢,R.sup.3代表一个碳原子数最多为6的烷基、一个可以被卤素或较低的烷基取代的苯基、一个苄基或氢,通过将公式(II)的2-卤甲酰基乙基磷酸卤化物 ##STR2## 其中R.sup.1、R.sup.2和R.sup.3的定义与公式(I)中相同,X代表氯或溴,与大约等量的水或者公式(II)的一个磷-羧酸反应,其中两个基团X都代表OH基。