申请人:——
公开号:US04567302A1
公开(公告)日:1986-01-28
Quaternary ammonium salts exhibiting strong antimicrobial activity are disclosed along with the method of using them as antimicrobial agents. The salts having the formulas I or II: ##STR1## wherein R is C.sub.1-20 alkyl, C.sub.5-7 cycloalkyl or an aralkyl group, R.sup.1 is methyl or ethyl, and X is a halogen, are prepared by the method comprising the steps of: (a) initially reacting 2-nitro-2-methyl-1,3-propanediol or 2-nitro-2-ethyl-1,3-propanediol or a mixture thereof and trioxane in a solvent containing an acid to obtain a first product; (b) reducing said first product by dissolving said first product in a solvent and maintaining the resulting solution under a hydrogen atmosphere in the presence of a reduction catalyst to obtain a second product; (c) alkylating said second product by maintaining said second product under a hydrogen atmosphere in the presence of a formaldehyde solution, a solvent and an alkylation catalyst to obtain a third product; and (d) quaternizing said third product by reacting said third product with a halogenated hydrocarbon in the presence of a solvent to obtain quaternary ammonium salts.
本发明揭示了具有强抗微生物活性的季铵盐,以及将其用作抗微生物剂的方法。具有以下I或II式的盐:##STR1##其中,R是C.sub.1-20烷基,C.sub.5-7环烷基或芳基烷基,R.sup.1是甲基或乙基,X是卤素,通过以下步骤制备:(a)最初在含有酸的溶剂中反应2-硝基-2-甲基-1,3-丙二醇或2-硝基-2-乙基-1,3-丙二醇或它们的混合物和三噁烷,以获得第一产物;(b)通过将第一产物溶解在溶剂中,并在还原催化剂的存在下,在氢气气氛下维持所得溶液,以还原所述第一产物,获得第二产物;(c)通过在甲醛溶液、溶剂和烷基化催化剂的存在下,在氢气气氛下维持所得第二产物,进行烷基化反应,获得第三产物;(d)通过在溶剂的存在下,将卤代烃与第三产物反应,以获得季铵盐。