Compounds of formula (I) or salts thereof,
in which R1, R2, R3, R4, R5, R6, X and Y are defined as in claim 1, can be prepared by a process characterized in that a compound of the formula (II) or a salt thereof,
is reacted to a compound of the formula (III) or a salt thereof,
and an aluminium(III) source, optionally, in the presence of a protic additive or solvent selected from the group consisting of alcohols or amines.
The compounds (I) are suitable to be used for the preparation of heterocyclic compounds corresponding to (I) where the group AI(X)(Y) is replaced with an optionally substituted carbon atom, or s-triazine derivatives thereof.
式 (I) 的化合物或其盐类、
其中 R1、R2、R3、R4、R5、R6、X 和 Y 的定义如权利要求 1 所述、
与式(III)化合物或其盐反应、
和铝(III)源反应,可选择在有选自醇或
胺类的原生添加剂或溶剂存在的情况下进行。
化合物(I)适用于制备基团 AI(X)(Y)被任选取代的碳原子取代的与(I)相对应的
杂环化合物或其 s-三嗪衍
生物。