申请人:Sagami Chemical Research Center
公开号:US04581452A1
公开(公告)日:1986-04-08
A process for preparing a 5-perfluoroalkyl-dihydrouracil derivative of the general formula ##STR1## wherein R.sub.f represents a perfluoroalkyl group, each of R.sup.1 and R.sup.2 represents a hydrogen atom, or an alkyl, cycloalkyl, aryl, aralkyl or heterocyclic group, and Y is an oxygen or sulfur atom, which comprises (a) reacting a compound of the general formula ##STR2## wherein X represents a halogen atom or hydroxyl group, with a urea derivative of the general formula ##STR3## provided that when X is a hydroxyl group and at least one of R.sup.1 and R.sup.2 is a hydrogen atom, said reaction is carried out in the presence of a condensing agent, or (b) cyclizing a compound of the general formula ##STR4## and a novel intermediate compound of the above formula (IV).
一种制备5-全氟烷基-二氢尿嘧啶衍生物的方法,其一般式为##STR1##其中R.sub.f代表全氟烷基,R.sup.1和R.sup.2分别代表氢原子或烷基、环烷基、芳香基、芳基烷基或杂环基,Y为氧或硫原子,其包括(a)将一般式为##STR2##其中X代表卤素原子或羟基的化合物与一般式为##STR3##的脲衍生物反应,但当X为羟基且R.sup.1和R.sup.2中至少有一个为氢原子时,在缩合剂的存在下进行反应,或(b)环化一般式为##STR4##的化合物和上述式(IV)的新中间体化合物。