申请人:Bayer Aktiengesellschaft
公开号:US04000152A1
公开(公告)日:1976-12-28
Cyclic aminals of aromatic heterocyclic compounds useful in the dyestuffs, pharmaceutical and pesticides industries, are prepared by reacting aromatic heterocyclic compounds containing at least one NH-group in a ring with a tetra-aminoethylene. The cyclic aminals produced have the formula ##STR1## wherein X.sup.5, X.sup.6, X.sup.7 and X.sup.8 are the same or different and are A. nitrogen; or B. X.sup.5 is C - R.sup.3 and/or X.sup.6 is C - R.sup.4 and/or X.sup.7 is C - R.sup.5 and/or X.sup.8 is C - R.sup.6, wherein R.sup.3, r.sup.4, r.sup.5 and R.sup.6 are the same or different and are selected from the group of hydrogen, optionally substituted aliphatic, aromatic, heterocyclic or araliphatic, and any other radical which does not react with tetra-aminoethylene; or two adjacent radicals together with the carbon atoms substituted thereby can form a fused ring; or C. the group (Z): ##STR2## wherein R.sup.1 and R.sup.2 are as defined in claim 1; and D. at least one of the radicals X.sup.5, X.sup.6, X.sup.7 and X.sup.8 in the group (Z); and E. when X.sup.7 is nitrogen or X.sup.7 and X.sup.8 together form a fuzed benzene ring, then only X.sup.5 and/or X.sup.6 can represent the group (Z).
芳香杂环化合物的环氨基化合物在染料、制药和农药行业中有用,通过将至少含有一个NH基团的芳香杂环化合物与四氨基乙烯反应制备。所产生的环氨基化合物具有以下公式:其中X^5、X^6、X^7和X^8相同或不同,为A. 氮;或B. X^5为C - R^3和/或X^6为C - R^4和/或X^7为C - R^5和/或X^8为C - R^6,其中R^3、R^4、R^5和R^6相同或不同,选自氢、可选择取代的脂肪、芳香、杂环或芳基脂肪,以及与四氨基乙烯不反应的任何其他基团;或两个相邻基团与其替代的碳原子一起可以形成融合环;或C. 组(Z):其中R^1和R^2如权利要求1中所定义;和D. 组(Z)中至少一个基团X^5、X^6、X^7和X^8;和E. 当X^7为氮或X^7和X^8一起形成融合苯环时,那么只有X^5和/或X^6可以代表组(Z)。