申请人:Petrolite Corporation
公开号:US04163850A1
公开(公告)日:1979-08-07
Quaternary nitrogen-heterocyclic phosphonates wherein the phosphonate group is ortho- or para- to the nitrogen heterocyclic group, where the compounds are characterized as follows: ##STR1## wherein the dotted line represents a cyclic structure which cyclic structure may be the sole cyclic structure, or may be attached to other cyclic groups, where R is a hydrocarbon or a substituted hydrocarbon group such as alkyl, aryl, alkaryl, aralkyl, etc., and X is an anion such as halogen, a sulfite, a sulfate, a sulfonate-containing group, etc. These nitrogen-heterocyclic phosphonates are prepared by reacting an aromatic nitrogen-heterocyclic compound, wherein the nitrogen atom is in the form of a quaternary alkoxy derivative (N--OR hereinafter defined) with a phosphite salt, preferably in the form of an ester of the phosphite, as exemplified by the following equation: ##STR2## Quaternaries of these compounds are prepared by further reaction with a quaternizing agent. These compounds which may be characterized as quaternaries of phosphonates of nitrogen-heterocyclics have many uses including their use as biocides, such as bacteriocides, herbicides, corrosion inhibitors and chelating agents.
四价氮杂环膦酸盐,其中膦酸盐基团位于氮杂环基团的邻位或对位,该化合物的特征如下:##STR1##其中虚线代表循环结构,该循环结构可以是唯一的循环结构,也可以附着在其他循环基团上,其中R是烃或取代烃基团,例如烷基,芳基,烷芳基,芳基烷基等,X是阴离子,例如卤素,亚硫酸盐,硫酸盐,含磺酸盐基团等。这些氮杂环膦酸盐是通过将芳香族氮杂环化合物与膦酸盐反应制备而成,其中氮原子以四价烷氧衍生物(N-OR,下文定义)的形式存在,所述膦酸盐优选为膦酸盐的酯形式,如下式所示:##STR2##这些化合物的四价体是通过进一步与季铵化试剂反应制备而成。这些化合物可以被描述为氮杂环膦酸盐的季铵化物,具有许多用途,包括用作生物杀菌剂,如细菌杀菌剂,除草剂,防腐剂和螯合剂。